As New Orleans residents warily track another threatening storm, a new report presents the clearest picture yet of deaths from Katrina in Louisiana. Of the nearly 1,000 who died, almost half were 75 or older, according to researchers. ...more

August 29, 2008

Measles cases in the United States are at the highest level in more than a decade, with nearly half of those involving children whose parents rejected vaccination, health officials reported Thursday. ...more

August 22, 2008

The first federal survey of both men and women on adoption issues challenges some stereotypes and offers some surprising findings: ...more

August 8, 2008

The average time that hospital emergency rooms patients wait to see a doctor has grown from about 38 minutes to almost an hour over the past decade, according to new federal statistics released Wednesday. ...more

August 6, 2008

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

August 4, 2008

On a sunny May afternoon, teenagers dismissed from a Beverly Hills middle school gathered outside a restaurant four blocks away and gossiped about their friends. ...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