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InfluenzaNCT01282177

Influenza Vaccine Safety and Effectiveness in Healthcare Providers

An observational study of Influenza, run by Dalhousie University.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The overall objective of this study is to provide ongoing assessment of the safety and effectiveness of seasonal and pandemic H1N1 vaccines in the prevention of ILI (influenza like illness), ILI-associated work absenteeism, and laboratory-confirmed influenza in a cohort of Canadian HCP (Health care providers). Read more about this study

Who is it for?
Ages 18 to 69 yearsHealthy volunteers can take part
Conditions the study is for
Influenza
How many people
1,143 participants
Where
No sites listed yet
Study dates
Oct 2009to Jun 2012
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 69 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: A cohort of adult HCP will be offered the opportunity to participate in this surveillance study at Influenza vaccination clinics in their health care facility

Who may be able to join

  • 1)18-69 years old, inclusive, as of Sept. 1 on the year of enrolment; 2)understand the study, agree to its provisions, and give written informed consent to participate; 3)available for follow-up for at least 1 influenza season 4)have convenient access to a computer with internet access and basic skills for use of the internet; 5)employed full-or part -time (> 8 hours/week) in an acute care hospital (in any occupation) or, if a physician or midwife, working at least 8 hours per week in an acute care hospital.

Who cannot join

  • planning to spend more than two consecutive weeks outside of Canada during the winter study period (Oct. 15- Apr. 15);
  • received an immunoglobulin within 6 months of study entry;
  • planning to take leave from work for more than two consecutive weeks during the winter study period (e.g. maternity or medical leave);
  • participating in a trial that would result in receipt of an investigational medication during the study period

About this study

Official title: Monitoring Seasonal and Pandemic Vaccine Safety and Effectiveness in Healthcare Providers:A Prospective Cohort Study

The overall objective of this study is to provide ongoing assessment of the safety and effectiveness of seasonal and pandemic H1N1 vaccines in the prevention of ILI (influenza like illness), ILI-associated work absenteeism, and laboratory-confirmed influenza in a cohort of Canadian HCP (Health care providers). Given the uncertainties around the timing of the provision of seasonal influenza immunization to HCP for the 2009/10 influenza season, this study will focus on evaluation of safety and effectiveness of pandemic influenza immunization in Year 1 and evaluation of all recommended influenza vaccines in Years 2 and 3.

Read the detailed description

Participants in Year 1 (2009/10) will be recruited beginning Oct. 1 through the end of the pandemic H1N1 influenza immunization campaign.

Participants will be followed from the day of vaccination until the end of the influenza season approximately Oct-April for each season.

At the initial visit, participants will have 1 tube of blood (10cc) collected at the time of enrolment to determine baseline antibody titres against pandemic H1N1 and the influenza strains in the past and current year's seasonal influenza vaccines.

Participants will receive automated email reminders with links to follow-up web-based questionnaires at weekly intervals following the completion of the baseline survey and until the end of the influenza season.

If a participant reports a respiratory illness, they will receive a follow-up questionnaire asking details of the illness including the occurrence of respiratory illness and associated symptoms, contact with patients or household members that had respiratory illness, respiratory symptom-related healthcare utilization, prescription or over-the-counter products used for treatment of the respiratory illness, and number of days of work missed due to respiratory illness or worked with symptomatic respiratory tract infection. An email will be sent to each participant every Monday morning during the season reminding the participant to complete their weekly diary and report and send in their nasal swab if they have symptoms of an acute respiratory illness.

At the initial visit participants will be taught how to collect their nasal swab and will practice doing their own swab in the presence of the study nurse/research associate. Participants will be instructed to collect a nasal swab and return the swabs as soon as possible after onset of ILI or respiratory illness (target < 48h after onset). Participants will be asked to collect the swab if they develop symptoms compatible with a viral respiratory tract infection (fever without an apparent source OR new symptoms with at least 2 of the following -cough, runny/stuffy nose, sneezing, sore/scratchy throat, hoarseness, malaise, myalgia, headache, fatigue OR one local symptom (runny/stuffy nose, sneezing, sore/scratchy throat, hoarseness, cough) plus one systemic symptom (fever, malaise, myalgia, headache, fatigue). If they prefer, a nasopharyngeal swab will be collected by a member of the study team as soon as possible after the onset of symptoms.

Conditions
Influenza
Keywords
surveillance, safety , tolerability , vaccine
Medical subject headings
Influenza, Human

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Assessment of the safety and tolerability of seasonal and pandemic influenza vaccine among a cohort of HCP

    Health care providers will receive automated email reminders with a link to report any changes in their health within 4 weeks of vaccination.

    Measured: October to April each year

Secondary outcomes (1)
  1. To validate published ILI case definitions in a cohort of HCP

    A cohort of HCP will be asked via an automated email to report the presence of an upper respiratory illness and to self collect a nasal swab to be tested for influenza.

    Measured: October to April each year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Jan 2011 (estimated)
  2. Study startOct 2009
  3. Primary completionApr 2012
  4. Study completionJun 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
1,143 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01282177
Sponsor's protocol ID
114142
Status last verified
Jan 2017
First submitted
7 Jan 2011
Last updated
19 Jan 2017
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

An observational study of Influenza, run by Dalhousie University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 19 Jan 2017. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Assessment of the safety and tolerability of seasonal and pandemic influenza vaccine among a cohort of HCP (time frame: October to April each year). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Jan 2017.

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