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Health Agencies Update
May 17, 2000

Variety=Destiny?

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JAMA. 2000;283(19):2514. doi:10.1001/jama.283.19.2514-JHA00003-2-1

For some people, acute infection with hepatitis C virus (HCV) leads to chronic illness; for a lucky minority—about 15% of those infected—a full recovery follows. Now, a new study published in the April 14 issue of Science indicates that events that take place soon after primary infection determine whether patients succeed in clearing virus from the body or whether they become chronically infected.

In the study, researchers at the National Institutes of Health, the University of Cagliari in Italy, and other institutions analyzed how viral genes coding for proteins that coat the surface of the virus evolved in patients who became infected with HCV from blood transfusions. Changes in surface proteins enable the virus to evade attack by the immune system.

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