Post-License Safety Evaluation of Influenza Virus Vaccine

Status Completed

Clinical Trial Summary

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

Clinical Trial 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. ;

Study Design

Observational Model: Case-Only, Time Perspective: Retrospective

Related Conditions & MeSH terms

Adverse Drug Event
Drug-Related Side Effects and Adverse Reactions
Influenza
Influenza, Human

Clinical Trial Details

NCT number	NCT02136017
Study type	Observational
Source	Sichuan Center for Disease Control and Prevention
Contact
Status	Completed
Phase	N/A
Start date	January 2013
Completion date	December 2013

View Details

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