Cambodian women wear masks as they walk in a market in Phnom Penh in Oct. 2009. That month a second Cambodian died from swine flu, health officials said. Tang Chhin Sothy/AFP/Getty Images hide caption

itoggle caption Tang Chhin Sothy/AFP/Getty Images

A Haitian protester in Port-au-Prince last year spray-paints a wall, equating the UN mission in Haiti (abbreviated here as MINISTA) with cholera. Thony Belizaire/AFP/Getty Images hide caption

itoggle caption Thony Belizaire/AFP/Getty Images

French surgeon Pierre Foldes in his Paris office in 2004. Foldes performs reconstructive surgery on women who have undergone genital mutilation. He recently authored a study on the long-term effects of the surgery. Jean Ayissi/AFP/Getty Images hide caption

itoggle caption Jean Ayissi/AFP/Getty Images

Timothy Ray Brown, widely known in research circles as the Berlin patient, was cured of his HIV infection by bone marrow transplants. Now scientists are trying to make sense of the traces of HIV they've found in some cells of his body. Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR

A man plays soccer in Kiev on Thursday. The first games of the Euro 2012 tournament are on Friday. Alex Livesey/Getty Images hide caption

itoggle caption Alex Livesey/Getty Images

Gao Weiwei, a doctor of the Beijing Chest Hospital which specializes in the treatment of tuberculosis, talks to a patient suspected to have tuberculosis at the hospital in Tongzhou, near Beijing, March 27, 2009. Ng Han Guan/AP hide caption

itoggle caption Ng Han Guan/AP

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 hide caption

itoggle caption Courtesy of Ritu Sharma

A Pakistani man wheels Jamshid, an 8-year-old girl with polio, around the outskirts of the capital Islamabad last July. Behrouz Mehri/AFP/Getty Images hide caption

itoggle caption Behrouz Mehri/AFP/Getty Images