Congress must reject cuts to PEPFAR, which has supported H.I.V. treatment and prevention worldwide for more than 20 years.

Zackie Achmat, once at the center of South Africa’s push for lifesaving H.I.V. treatment, has come out of retirement as U.S.

The World Health Organization is now recommending that countries include an HIV drug newly approved for prevention, ...

South Africa's government has estimated that universities and science councils could lose about $107 million in U.S. research ...

The most common HIV antibody blood test is called an “A-0” test, which is available for approximately 70 cents in many low- ...