What is the difference between vaccines and antivirals?

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Vaccines prevent influenza. They give you immunity to specific diseases by telling your body to make antibodies.

Antivirals are drugs used for early treatment of influenza, and in special cases for prevention. They do not make you immune to the virus, but they can reduce the severity and length of illness. Most people are recovering well from H1N1 flu on their own at home, so this flu season antivirals will be used for early treatment only for those who need it.