Enhanced Safety Surveillance of GlaxoSmithKline's (GSK's) Quadrivalent Seasonal Influenza Vaccines During the 2018/19 Influenza Season

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were diarrhoea, nausea, and vomiting.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were diarrhoea, nausea, and vomiting.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were chills, face oedema, fatigue, injection site erythema, injection site pain, injection site swelling, and pyrexia.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were chills, face oedema, fatigue, injection site erythema, injection site pain, injection site swelling, and pyrexia.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were anaphylactic reaction and hypersensitivity.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were conjunctivitis and rhinitis.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were conjunctivitis and rhinitis.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card was decreased appetite.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card was decreased appetite.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were arthropathy and myalgia.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were arthropathy and myalgia.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were febrile convulsion and headache.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were febrile convulsion and headache.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEI listed on the ADR card was irritability.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEI listed on the ADR card was irritability.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were cough, dysphonia, epistaxis, nasal congestion, oropharyngeal pain, rhinorrhoea, and wheezing.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were cough, dysphonia, epistaxis, nasal congestion, oropharyngeal pain, rhinorrhoea, and wheezing.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. The pre-defined AEIs listed on the ADR card were rash and rash generalised.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were rash and rash generalised.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for cardiac disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for cardiac disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for ear and labyrinth disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for ear and labyrinth disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for eye disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for eye disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for injury, poisoning and procedural complications.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for injury, poisoning and procedural complications.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for investigations.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for investigations.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. There were no predefined AEIs listed on the ADR card for vascular disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. There were no predefined AEIs listed on the ADR card for vascular disorders.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°36 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°38 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°40 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°42 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°44 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°46 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°48 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°50 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°52 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°54 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°56 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°58 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°60 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°62 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°64 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°66 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°68 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°2 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°4 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°6 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°8 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°10 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°12 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°14 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°16 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°18 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°20 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°22 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°24 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°26 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°28 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°30 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°32 for the overall (across age strata) post-dose 2 results.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Age strata were defined as "6 months to 17 years", "18 to 65 years" and ">65 years". All subjects who received the second dose of vaccine, were in the first age stratum: "6 months to 17 years". Please, refer to outcome n°34 for the overall (across age strata) post-dose 2 results.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were diarrhoea, nausea, and vomiting. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were diarrhoea, nausea, and vomiting. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. The pre-defined AEIs listed on the ADR card were diarrhoea, nausea, and vomiting. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The weekly percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination at the same week. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e. week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a first dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 1 vaccination (i.e., week 40) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 40 and 52. No vaccination (Dose 1) was administered from ISO week 49 onwards. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.

The cumulative percentage of subjects was calculated as follows (per 100 subjects): the denominator was the number of subjects vaccinated with a second dose of the GSK's quadrivalent seasonal influenza vaccine at any point from dose 2 vaccination (i.e., week 46 for the second dose) up to the end of the week of interest; the numerator was the number of subjects among those vaccinated subjects, who reported the AE at least once on the ADR card within 7 days following vaccination. Vaccination period was defined between ISO weeks 46 and 52. Risk status (At risk; Not at risk) was recorded for influenza-associated morbidity and mortality as per healthcare professional assessment.