Inactivated Influenza (Flu) Vaccine
Internet URL
http://www.immunize.org/vis/2flu.pdf 
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Description
Two types of influenza (flu) vaccine are now available. Inactivated (killed) influenza vaccine, given as a shot, has been used in the United States for many years. A live, weakened vaccine was licensed in 2003. It is sprayed into the nostrils.