A nurse prepares a syringe for a measles vaccination at a pediatric clinic in Kiev, Ukraine. The country had 72,408 measles cases in the year from March 2018 to February 2019 — the highest number for any country during that period. Sergei Supinsky/AFP/Getty Images hide caption
This man is wading from house to house in the Wimbi neighborhood of the city of Pemba, one of the hardest hit by flooding. He and others helped residents bring their possessions to higher ground. Tommy Trenchard for NPR hide caption
MMR — the modern combination vaccine against measles, mumps and rubella — provides stronger, longer-lasting protection against measles than the stand-alone measles vaccine typically given in the U.S. in the early 1960s. Eric Risberg/AP hide caption
Melinda Gates at a panel discussion in New York in February. She is the author of a new book, The Moment of Lift: How Empowering Women Changes the World. John Lamparski/Getty Images hide caption
Two Syrian refugees, Narwal Alakayleh (left) and Lina AlAlssantin (right), prepare for a pop-up dinner of Levantine food at Newcomer Kitchen. Jessica Wright hide caption
Seventh-grade teachers Rita Ibrahim John, left, and Anotinia Marquez Bero, right, must share a single room to teach their two classes. Cyclone Idai destroyed 32 classrooms at Eduardo Mondlane Primary Completion School in Mozambique. Tendai Marima for NPR hide caption
A new study pinpoints which part of a mosquito's body is repulsed by the taste of DEET. Philippe Hugen/AFP/Getty Images hide caption
Health workers marched in Butembo on Wednesday to protest the violence they're facing. The demonstration comes in the wake of an attack last Friday in which an epidemiologist from Cameroon was shot and killed. Al-hadji Kudra Maliro/AP hide caption
Dr. Richard Valery Mouzoko Kiboung of Cameroon was killed on Friday in an attack on an Ebola response command center in Democratic Republic of the Congo. DRC Ministry of Health & WHO hide caption
Foxtrot and Gemma Snowdon of the U.N.'s World Food Programme, who rescued the lost 4-week-old puppy. Jason Beaubien/NPR hide caption
Parts of the Cape Fear River near Fayetteville, N.C., are contaminated with a PFAS compound called GenX. The North Carolina Department of Health and Human Services is surveying residents in the area about their health. Mark Wilson/Getty Images hide caption
Clemantine Wamariya, who fled Rwanda as a girl, is now a U.S. citizen. She is a human rights advocate and a speaker. Steve Jennings/Getty Images for Free The Children hide caption
The anti-HIV drug dolutegravir is effective — but may carry a risk for pregnant women. Science Source hide caption