Can a pill a day help prevent infection from HIV, the virus that causes AIDS? ...more

August 4, 2008

The number of Americans infected by the AIDS virus each year is much higher than the government has been estimating, U.S. health officials reported, acknowledging that their numbers have understated the level of the epidemic. ...more

August 3, 2008

Federal officials have been underestimating the number of new AIDS infections in the United States by 40 percent every year for more than a decade, researchers said Saturday. ...more

August 3, 2008

I'm still not quite over the movie "Jaws," which came out in 1975. I rarely go into the Gulf, and when I do, I sense that sharp teeth could slice through my leg at any moment. Somehow, it's hard to relax. ...more

August 2, 2008

HPV is the most common sexually transmitted infection in the country. ...more

July 31, 2008

More than 1,000 people died over two years from an illegal version of the painkiller fentanyl, the government reported Thursday in its first national tally of those deaths. ...more

July 25, 2008

It was a hot lead for detectives on a cold case. People suddenly were getting salmonella at a Minnesota restaurant more than 1,000 miles from the center of the nation's outbreak. ...more

July 24, 2008