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Emergency Tips
Flu Vaccines
The
single best way to protect against the flu is to get vaccinated each year.
There are two types of vaccines:
Each vaccine contains three influenza viruses-one A (H3N2) virus, one A (H1N1) virus, and one B virus. The viruses in the vaccine change each year based on international surveillance and scientists' estimations about which types and strains of viruses will circulate in a given year.
About 2 weeks after vaccination, antibodies that provide protection against influenza virus infection develop in the body.
When to Get Vaccinated
Yearly flu vaccination should begin in September or as soon as vaccine
is available and continue throughout the influenza season, into December,
January, and beyond. This is because the timing and duration of influenza
seasons vary. While influenza outbreaks can happen as early as October,
most of the time influenza activity peaks in January or later.
Who Should
Get Vaccinated
In general, anyone who wants to reduce their chances of
getting the flu can get vaccinated. However, it is recommended by ACIP
that certain people should get vaccinated each year. They are either
people who are at high risk of having serious flu complications or people
who live with or care for those at high risk for serious complications.
During flu seasons when vaccine supplies are limited or delayed, ACIP
makes recommendations regarding priority groups for vaccination.
People who should get vaccinated each year are:
Use of the
Nasal Spray Flu Vaccine
It should be noted that vaccination with
the nasal-spray flu vaccine is always an option for healthy* people
2-49 years of age who are not pregnant.
Who Should Not Be Vaccinated
There are some people who should not be vaccinated without first consulting
a physician. These include:
Vaccine Effectiveness
The ability of flu vaccine to protect a person depends on the age and
health status of the person getting the vaccine, and the similarity
or "match" between
the virus strains in the vaccine and those in circulation. Testing
has shown that both the flu shot and the nasal-spray vaccine are effective
at preventing the flu.
Vaccine Side Effects (What
to Expect)
Different side effects can be associated with the flu shot
and LAIV.
The
Flu Shot
The viruses
in the flu shot are killed (inactivated), so you cannot get the flu from
a flu shot. Some minor side effects that could occur are:
If these problems occur, they begin soon after the shot and usually last 1 to 2 days. Almost all people who receive influenza vaccine have no serious problems from it. However, on rare occasions, flu vaccination can cause serious problems, such as severe allergic reactions. As of July 1, 2005, people who think that they have been injured by the flu shot can file a claim for compensation from the National Vaccine Injury Compensation Program (VICP).
LAIV
(FluMist®)
The viruses in the nasal-spray vaccine are weakened and do
not cause severe symptoms often associated with influenza illness. (In clinical
studies, transmission of vaccine viruses to close contacts has occurred
only rarely.)
In children, side effects from LAIV (FluMist®) can include:
In adults, side effects from LAIV (FluMist®) can include: