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InfluenzaNCT02136017

Post-License Safety Evaluation of Influenza Virus Vaccine

An observational study of Influenza and Adverse Drug Event, run by Sichuan Center for Disease Control and Prevention.

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

To evaluate the safety of the post-licensed influenza virus vaccine made of Changchun Institute of Biological Products Co.,Ltd. Read more about this study

Who is it for?
Ages 3 years and older
Conditions the study is for
Influenza, Adverse Drug Event
Type of treatment
Vaccines
How many people
400,000 participants
Where
No sites listed yet
Study dates
Jan 2013to Dec 2013
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 3 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: all the people immunized by influenza vaccine of Changchun Institute of Biological Product in Sichuan province in 2013.

Who may be able to join

  • ever vaccinated one dose influenza vaccine(manufactured by Changchun institute of biological product) in 2013
  • above 3 years old

Who cannot join

  • Severe allergic reaction (e.g., anaphylaxis) after previous dose of any IIV or LAIV
  • allergic to a vaccine component, including egg protein.

About this study

Official title: Phase 4 Study of Post-License Safety Evaluation of Influenza Split Vaccine

To evaluate the safety of the post-licensed influenza virus vaccine made of Changchun Institute of Biological Products Co.,Ltd.

Read the detailed description

In order to evaluate the safety of the post-licensed influenza vaccine (the vaccine is manufactured by Changchun Institute of Biological Products Co.,Ltd in China), retrospectively collect the AEFI cases reported from national AEFI surveillance system in Sichuan province of China in 2013, compare the incidence and proportion of local and general reactions, with other influenza vaccine.

Adverse events were collected through the National Immunization Information System's National Adverse Events Following Immunization (AEFI) Surveillance System, which was established in 2005 on the basis of World Health Organization (WHO) guidelines. According to the Guideline for the Identification of Adverse Reaction after Immunization issued by the Chinese Ministry of Health in 2008, Sichuan CDC and local prefectural CDC must organize an expert panel to investigate adverse events and assess causality, using criteria based on Chinese Standard Procedures for Vaccination.

At the time of vaccination, vaccinees were instructed to report any adverse event to physicians or vaccination providers. Adverse events that were fatal or that resulted in disability and clusters of events (i.e., notably high numbers of similar adverse events related to a certain vaccine) were required to be reported within 2 hours after their occurrence. The following adverse events were required to be reported within 2 days after their occurrence: anaphylaxis or other allergic reactions occurring within 24 hours after vaccination; fever (axillary temperature, >37.5°C), angioedema, or a local injection-site reaction (diameter, >2.5 cm) occurring within 5 days after vaccination; purpura, an Arthus reaction, febrile convulsion, seizure, or polyneuritis occurring within 15 days after vaccination; and the Guillain-Barré syndrome occurring within 3 months after vaccination. Other reactions that were common and minor (e.g., mild pain and fatigue) were not required to be reported.

Keywords
AEFI, influenza vaccine
Medical subject headings
Influenza, Human, Drug-Related Side Effects and Adverse Reactions

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT02136017
Study groupRoleWhat they receive
Changchun biologial's vaccineChangchun Biological's vaccine group is the population injected with this vaccine.

What is being measured

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

  1. occurence rate of adverse reaction

    the general or local reactions are reported after vaccination .

    Measured: 1 month after vaccination

Timeline

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

  1. First posted12 May 2014 (estimated)
  2. Study startJan 2013
  3. Primary completionDec 2013
  4. Study completionDec 2013

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
Case only
Time perspective
Retrospective
Enrolment
400,000 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02136017
Sponsor's protocol ID
cnbg-002
Status last verified
May 2014
First submitted
8 May 2014
Last updated
12 May 2014
Results posted
No
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

An observational study of Influenza and Adverse Drug Event, run by Sichuan Center for Disease Control and Prevention.

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 2 inclusion and 2 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 12 May 2014. 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?

occurence rate of adverse reaction (time frame: 1 month after vaccination). 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 12 May 2014.

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