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At a time when even doctors refused to see his adopted son, Tom Graziano found solace in the way his elementary school principal embraced him. "I want to thank you," Graziano tells him years later.

Ruth Coker Burks has no medical training but has spent decades caring for people with AIDS. "I've buried over 40 people in my family's cemetery," she says, "because their families didn't want them."

In high school, Cristina Peña was afraid to tell her boyfriend, Chris Ondaatje, that she was HIV-positive. She needn't have worried. More than a decade later, they're still together.

The $31.3 billion given by wealthy nations, aid groups, charities, large foundations and others in 2013 reflects the shifting mix of donors backing international health projects, an analysis suggests.

A steady increase in the number of people getting antiviral drugs has helped lower the rates of infection and death from HIV. Treatment can save a person's life. It also helps reduce the risk that infected people will pass HIV to their sexual partners and children.

In the 1980s, Stephen Crohn was exposed to HIV but never became infected. Throughout his lifetime, he helped scientists discover a genetic mutation that keeps HIV from infecting the immune system. Crohn died in August at age 66. A doctor who worked with him reflects on his contributions to science and the fight against AIDS.

Adult film production in California is now suspended after a number of performers tested positive for HIV. Though news of the cases may leave some performers feeling vulnerable, the industry's trade group says its response shows that the system works.

One of the biggest challenges in public health challenges is reaching people in vulnerable groups. Often influential peers are recruited to help spread the word. When that technique was transferred to Facebook, at-risk Latino and African American Men were more likely to get an HIV test.

Treating sex workers infected with HIV can save their lives and reduce the odds that they will spread HIV to clients. To make it easier for prostitutes to get care, a university-run clinic in Johannesburg is located in a neighborhood where they work.

The nation with the worst HIV epidemic on the planet is finally turning the corner on the disease. South Africa is simplifying AIDS care and giving antiviral drugs to nearly 2 million people every day.