Waging War on Hepatitis C

By sleuthing out how the virus disarms the immune system, scientists could be closing in on a cure. Vertex Pharmaceuticals has taken the lead

Many viruses have figured out ways to elude the body's protective system. One of the cleverest is the hepatitis-C virus. In scores of millions of infected people, the bug does its damage by making trillions of new viruses a day, years after year.

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