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Flu Season 2001-02
CDC, National Immunization
Program
The Advisory
Committee on Immunization Practices Makes New Influenza Vaccine
Recommendations for 2002-03
February 20, 2002
The Advisory Committee on Immunization
Practices (ACIP) today voted on influenza vaccine recommendations for
the 2002-03 season. The influenza vaccine is the most effective way to
protect against influenza disease and its many complications. The ACIP
voted to prioritize vaccination efforts in October and earlier to target
persons at high risk of complications from influenza, health care
workers and children under 9 years of age who are receiving vaccine for
the first time, because they need a booster dose one month after the
initial dose. All other groups, including household members of high-risk
persons, healthy persons 50-64, and others who wish to decrease their
risk of influenza infection should begin vaccination in November. The
optimal time to vaccinate is during October and November, although the
change was made due to significant vaccine distribution delays during
the 2000-01 and 2001-02 influenza seasons and the possibility of similar
situations in future years.
In addition, the committee is
"encouraging" influenza vaccination for healthy children aged 6 months
to 23 months because children in this age group are at substantially
increased risk for influenza-related hospitalizations. A full
recommendation to annually vaccinate healthy children aged 6 months-23
months is expected to be made within the next one to three years.
The influenza recommendations for 2002
also encourage the use of influenza vaccine after November. Many people
who should or want to receive influenza vaccine remain unvaccinated
after November. Substantial amounts of vaccine have remained unused
during the past two influenza seasons and extended vaccination efforts
after November are needed to decrease illness and to ensure full use of
vaccine supplies. Vaccine received after November is likely to be
beneficial in most influenza seasons. Influenza activity has not peaked
in the majority of recent seasons until late December through early
March. Adults develop peak antibody protection against influenza
infection 2 weeks after vaccination.
Vaccine manufacturers are projecting
that a total of 88-93 million doses of influenza vaccine will be
produced for the coming season. This is an early projection and may
change as the season progresses. Influenza vaccine prepared for the
2002-03 season will include that same two A strains as those used in the
past season. The B strain has not yet been selected.
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