The director of the U.S. National Institutes of Health talks about a newly published expert article explaining that sexual transmission of HIV can't happen if a person is on fully effective treatment.

"My time in Amsterdam for the 2018 International AIDS Conference has proven that this fascinating city is certainly more 'sex positive' than most," Mark S. King notes.

On July 23, activists streamed through the streets to loudly -- and often quite colorfully -- advocate for an array of issues that, in large part, have been championed directly by communities of people living with HIV.

"New York City is proud to be the first jurisdiction in the United States to have joined the 'U = U' movement, and even prouder that health departments across the country are following suit," writes New York City Department of Health and Mental Hygie...

What good is groundbreaking science if people don't know about it? Bruce Richman, the driving force behind U=U, describes how the once-unpopular campaign gained critical mass.

What exactly is "U=U" and what does it mean for the average person living with HIV?

"I'm proud to be one of the many people living with HIV helping to promote the fact that undetectable truly means untransmittable," Kevin Maloney writes.

Over the past decade, the District of Columbia has seen more than a 74% decrease in the number of new HIV infections, from 1,333 new cases in 2007 to 347 in 2016. What's behind this decrease?

If you are HIV positive, take treatment and maintain an undetectable viral load, you can have sex knowing that you won't pass HIV to your sex partner.

Bruce Richman is the founder and executive director of Prevention Access Campaign and Undetectable = Untransmittable, a global community of HIV advocates, researchers and organizations, uniting to clarify and disseminate a groundbreaking, but largely...