amfAR leads HIV cure research with $2 million grant for Countdown initiative.
New mystical rectal microbicide offers extra protection against HIV and STIs.
Study finds majority of gay and bi men didn't use protection during sex.
Danny Pintauro's HIV disclosure sparks discussions on unsafe sex and drug use.
"Study shows Truvada prevents HIV infection in high-risk individuals 100% effectively."
Zachary Quinto clarifies PrEP comments in recent interview with Huffington Post.
Early HIV treatment brings significant clinical benefits, reducing risk of serious illness.