A girl is treated for suspected cholera infection at a hospital in Sanaa, Yemen. There were more than 1 million cases of cholera in the country between April 2017 and April 2018.
A memorial honoring victims of the AIDS epidemic sits across the street from the former St. Vincent's Hospital site in New York City, where many of the early victims of AIDS were diagnosed.
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Nick Vargas talks with Dr. Kathryn Hall at The Source, an LGBT center in Visalia, Calif. Hall says that time and time again, her patients tell her they're afraid to come out to their other doctors.
Ezra David Romero/Valley Public Radio
An HIV-positive mother in Thailand plays with her son, who did not contract the virus in utero. Thailand has eliminated mother-to-child transmission of HIV, according to the World Health Organization.
A gay man with HIV stands in a clinic in Dar es Salaam, Tanzania. He's been afraid to pick up his medicine because of the government's crackdown on the gay community.
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From left: Emmanuel Kwame lost his sight to river blindness as a young man in Ghana; a bed net keeps mosquitoes away from a mother and child in a Somalian hospital; extracting a guinea worm from an infected person.
Getty Images and NPR