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November 26, 2009
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Immunizations (cont.)

What is the pneumococcal vaccine, and who should receive it?

Streptococcus pneumoniae (also called pneumococcus) is a bacterium that can cause severe illness, including meningitis and pneumonia. The vaccine is routinely given to children; however, it is only given to adolescents and adults who are at higher risk. Elderly adults are one group that is considered at higher risk, and it is recommended that all adults receive one dose of the vaccine after 65 years of age. For specific guidance and a list of higher risk groups, please refer to Table 4 for adolescents or Tables 5A-5D for adults.

What is the influenza vaccine, and who should receive it?

Influenza (flu) is an acute viral illness that can kill even healthy people. Unfortunately, the influenza virus changes a little each year, and scientists have to make educated guesses about which forms of the virus will be infecting people and circulating each year. Based on the best available evidence, they create a vaccine each year containing three of the likely influenza virus types.

There are two types of vaccine: a live attenuated vaccine (nasal spray) and an inactivated vaccine (shot). You cannot get the flu from getting the flu shot because it has inactivated virus (killed virus with heat or chemicals). The immunity from the vaccines is limited, and vaccinations must be repeated yearly. In August 2008, the Advisory Committee on Immunization Practices changed the recommendation on adolescents. It is now recommended that all people between 6 months and 18 years of age receive an annual vaccination. Although the CDC encourages that any adult who wants to decrease the chance of getting the flu get the influenza vaccine, certain high-risk groups are recommended to always get the annual flu vaccine (Table 5C). Adults over 50 years of age are considered to be at high risk and should receive the yearly influenza vaccination. For specific guidance and a list of higher-risk groups, please refer to Table 4 for adolescents or Tables 5A-5D for adults.



Next: What is the hepatitis A vaccine, and who should receive it? »

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