Ritu Sharma (right), shown during a visit to Honduras, makes one trip a year to live with underprivileged women, one week at a time, living as the women there live.
Courtesy of Ritu Sharma
The Anopheles stephensi mosquito transmits the malarial parasite while dining on human blood. You can find this type of mosquito in Afghanistan, China, India, Thailand and the Middle East.
A mother and child wait to receive treatment at the HIV clinic in Nyagasambu, Rwanda, in Feb. 2008. The clinic was built by the Washington-based Elizabeth Glaser Pediatric AIDS Foundation with a grant from the PEPFAR program.
Local officials burn chicken coops in anticipation of a resurgence in bird flu in Jakarta, Indonesia, in January. Concerns about potential misuse of research into genes that control the contagiousness of flu have stymied publication.
U.S. Secretary of Health and Human Services Kathleen Sebelius (center) talks to a health worker during a visit to Eliazar Germain hospital in Port-au-Prince, Haiti, on Monday. It's Sebelius' first visit to the country.