PARIS — A scheme in six Indian states that concentrated safe-sex campaigns on a few niche groups prevented 100,000 HIV infections over five years, according to estimates published in The Lancet on Tuesday.
In the United States, a vocal movement of "intactivists," or people who oppose male circumcision, is engaged in a fierce debate with doctors over the practice of clipping baby boys' foreskins.
PARIS — Women who use hormonal birth control are roughly twice as likely to become infected with HIV or pass on the AIDS virus to their partner, according to a study published on Tuesday.
PARIS — Online gamers have achieved a feat beyond the realm of Second Life or Dungeons and Dragons: they have deciphered the structure of an enzyme of an AIDS-like virus that had thwarted scientists for a decade.
