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Hepatitis D

Hepatitis is an inflammation of the liver. Viruses cause most cases of hepatitis. The type of hepatitis is named for the virus that causes it; hepatitis A, hepatitis B, hepatitis C, hepatitis D and hepatitis E.

What Science Has To Say About “Herd Immunity”

The precise scientific term is “indirect protection” or “community immunity.” This is the protection against infection of a susceptible group of individuals

One More Reason to Get a Flu Shot

Vaccination is associated with a nearly halving (40 percent drop) in the risk of Alzheimer’s disease over four years.

HIV Prevention for Women

Today, it is possible to prevent getting an HIV infection or passing the virus to your partner or baby. But women still face unique challenges in preventing HIV.