Health officials estimate that 1 in 22 black Americans will be diagnosed with the AIDS virus in their lifetime — more than twice the risk for Hispanics and eight times that of whites.

One in five gay men living in 21 major U.S. cities are infected with the AIDS virus and nearly half are unaware of it, the Centers for Disease Control and Prevention (CDC) said in a study.

Lost the car keys? Forgot someone's name? Many elderly people suffer slight cognitive problems but men are more likely than women to suffer momentary memory lapse or senior moments, according to a U.S. study.

The Centers for Disease Control (CDC) will test a self-management health plan at two international airports to help prevent travelers from bringing diseases into Taiwan amid an increase of dengue fever cases in the country.

A Taichung-based engineer did not realize he had contracted AIDS and syphilis until a visit to the doctors on Wednesday. According to local media reports, the man, 29, admitted to being sexually active with over a hundred partners — many of whom he met online to engage in one-night stands — and did not know who infected him with the diseases.

A 23-year-old Chinese man who contracted the AIDS virus as a boy through a blood transfusion and who has since campaigned for the rights of AIDS sufferers has been detained, activists said Saturday.

Police in central China have detained an AIDS activist who contracted the virus as a boy and whose tireless campaigning for the rights of those with the disease angered local authorities, his fellow activists said Saturday.

German pop star Nadja Benaissa admitted on the opening day of her trial Monday not telling sexual partners, with whom she had unprotected sex, that she was HIV positive.

Nowhere in the world is the HIV virus spreading faster than in Eastern Europe and Central Asia, where more than 80 percent of those infected are under 30 years old, UNICEF said Monday.

Poverty is perhaps the most important factor in whether inner-city heterosexuals are infected with the AIDS virus, according to the first government study of its kind.