Abstract

Statement on Seasonal Influenza Vaccine for 2011-2012: An Advisory Committee Statement (ACS) National Advisory Committee on Immunization (NACI)†.

Highlights

  • I.1 Overview and Summary of ChangesThe purpose of this statement is to provide the NACI recommendations for immunization with seasonal influenza vaccine for the 2011-2012 season, based on evidence available at this time.The seasonal trivalent vaccine for 2011-2012 contains the same three components as the 2010-2011 vaccine

  • Influenza is a respiratory infection caused by influenza A and B viruses and occurs in Canada every year, generally during late fall and the winter months

  • The eighth product (FluMist®) is a live attenuated influenza vaccine (LAIV) that is authorized for use from 2-59 years of age

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Summary

Overview and Summary of Changes

The purpose of this statement is to provide the NACI recommendations for immunization with seasonal influenza vaccine for the 2011-2012 season, based on evidence available at this time. The special considerations category from the 20102011 statement has been removed (including children 2 to 4 years of age) as it is felt that elevated pandemic-related risk no longer exists for the groups in this category. Two of the groups (persons with morbid obesity and Aboriginal peoples) that NACI identified for special consideration for influenza vaccine in 2010-2011 have been added to the list of high-risk recipients for ongoing annual vaccination. Another major change in the statement is the advice for persons with egg allergy. Data are not currently available to support this recommendation for LAIV

Background
Methods
III.1 Disease Description
III.2.1 Disease Distribution
III.2.2 Risk Factors for Severe Disease
III.3 International Influenza Surveillance
III.3.1 United States
III.3.2 Europe
III.3.3 Southern Hemisphere
III.3.4 Animal Influenza
III.4 Antiviral Resistance
Seasonal Influenza Vaccine
IV.2.1 Efficacy
IV.2.2 Immunogenicity
IV.3 Administration of Influenza Vaccine
IV.5 Simultaneous Administration with Other Vaccines
IV.6 Adverse Events
IV.7 Contraindications and Precautions
General Considerations
Recommended Recipients
Others
Further Comments Regarding Influenza Immunization
Choice of Product
Strategies for Reducing the Impact of Influenza
Immunization of Health Care Workers
VIII. Research Priorities
Surveillance Issues
What – The disease and the vaccine
Who to immunize
Findings
Participants
Full Text
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