If you're sexually active with multiple partners, listen up: More Americans are picking up sexually transmitted diseases (STDs). However, fewer people are infected with syphilis.

If your long-term partner has HIV, you're at a high risk for infection. But medical research is creating options to safeguard yourself and your partner against transmitting the virus.

Last year, there was fanfare in the HIV/AIDS community when scientists created a vaginal gel to prevent HIV infection. Now, a group of researchers is making headway with a rectal gel.

People with HIV/AIDS are living longer lives now, but they still have compromised immune systems. Patients and their doctors need to be wary of secondary infections.

If you're a sexually active teen, your doctor should offer to test you for HIV at least once by the time you're 18. That's the new recommendation from the American Academy of Pediatrics.

For the past 30 years, scientists have had no success developing a vaccine for AIDS. Their track record may change with the discovery of a powerful new anti-HIV antibody.

Patients living longer with HIV/AIDS are at risk to develop a condition called HIV-associated dementia (HAD). Scientists have discovered that some people diagnosed HAD actually have two genetically different HIV types in their bodies, hiding in a place where HIV has never been seen before.

A new study estimates that 100,000 people in India have avoided HIV over the past five years, as a result of an prevention project targeting high-risk groups.

For HIV patients in the early stages of the disease, about half will develop changes in brain function including attention and memory deficits, and problems with verbal fluency.