Studies Link Circumcision to Reduced HIV Risk

Circumcision of adult men appears to be a highly effective method of reducing HIV transmission, officials of the National Institute of Allergy and Infectious Diseases announced in December. The announcement may bring a decades-long argument among medical researchers and social scientists closer to resolution.

The institute's Data and Safety Monitoring Board voted to cut short two large-scale, randomized studies of circumcision in Africa. Early results showed very strong effects, and

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