The administration will focus on more than fifty “hot spots” in the U.S. that annually account for half of new H.I.V. in...

Returning from a trip to the Democratic Republic of Congo, the agency chief also worried that vaccine supplies could run...

The head of Doctors Without Borders said outside groups, including hers, had alienated Congo residents, prompting commun...

Scientists have long tried to duplicate the procedure that led to the first permanent remission 12 years ago. With the s...