Provocative new research shows that treating people with the AIDS virus can provide a powerful bonus: It cuts the risk that they will infect others.

A new domestic AIDS policy rolled out by the White House on Tuesday looks for new ways to educate Americans about the deadly and incurable virus, cut new infections by 25 percent and get more patients treated quickly.

Prevalence of HIV among young people is falling in some of the worst-hit countries around the world amid a change in their sexual behavior patterns, UNAIDS said Tuesday.

Men who took erectile dysfunction drugs such as Viagra were more likely to become infected with sexually transmitted diseases, including AIDS, U.S. researchers reported on Monday.

World health officials Friday blasted the tobacco industry for going around enticing women in poor countries to smoke cigarettes with the same stereotypes used decades ago in rich nations.

Preventive use of a cheap, commonly-prescribed antibiotic dramatically reduced the death toll among African patients whose immune systems had been ravaged by the AIDS virus, says a paper appearing on Monday.

New HIV infections are increasing among homosexuals, drug users and prostitutes who don't seek help because of laws that criminalize these practices, the head of the U.N. AIDS agency said Monday.

Mobile phones may be a key weapon in the war against HIV and AIDS in Africa, says to the UNAIDS chief.

The United Nations is launching a global campaign to prevent girls and women from contracting HIV, now the leading cause of death and disease among women between the reproductive ages of 15 and 49.

More than 90 percent of the world's 16 million injecting drug users are offered no help to avoid contracting AIDS, and governments that ignore them risk a spiraling public health crisis, drugs experts said on Monday.