Actor Charlie Sheen announced this week that he has HIV, but in the four years since his diagnosis, he said, he's always shared his status with sexual partners.
Sheen said in a "Today" show interview that he'd had unprotected sex with two people since his diagnosis and it was "impossible" that he'd transmitted the virus to others. Sheen's doctor, Robert Huizenga, who joined him for the interview, said the 50-year-old actor started taking antiviral therapy after he was diagnosed with HIV, which has reduced his viral load.
It is not impossible for Sheen to infect others, but it is "incredibly low," said Huizenga, an assistant professor of clinical medicine at UCLA.
Indeed, there's still stigma around HIV, but with the right precautions, people with HIV can still have sex safely, experts said.
"Patients who have HIV can certainly have sex. What's important is that they do several things to decrease the risk of transmission," said David Rosenthal, medical director of the Center for Young Adult, Adolescent and Pediatric HIV at North Shore-LIJ Health System in Great Neck, New York.
The first thing is to decrease a patient's viral load, or the amount of HIV in the blood, semen and other bodily fluids, by taking antiretroviral therapy.
"The less amount of virus floating around in one's system, the less chance of giving it to someone else," Rosenthal said.
HIV is spread through sex -- primarily anal and vaginal sex, but oral sex also carries risk. The other common way to spread the virus is through sharing needles, syringes and other injection-drug paraphernalia.
