Margaret Chan (left), director general of the World Health Organization, is among the dignitaries visiting a military base in Conakry, Guinea, on a tour of west African countries affected by Ebola. Also pictured: Guinean President Alpha Conde (fourth from right) and U.N. Secretary General Ban Ki-Moon (right). BINANI/AFP/Getty Images hide caption

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WHO Aims To Reform Itself But Health Experts Aren't Yet Impressed

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Scientists Say It's Time To End 'Parachute Research'

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Mamuedeh Kanneh (right) was married to the man who brought Ebola to Barkedu, Liberia, a village of about 6,000. He died of the virus. She now cares for her children as well as children who lost their parents to the disease. John W. Poole/NPR hide caption

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The multimammate mouse can transmit Lassa virus to humans. The virus is likely spread when the rodent urinates or defecates on grain supplies. US National Library of Medicine, National Institutes of Health hide caption

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Garmai Sumo is a nurse featured in the documentary, Body Team 12. In one scene, she shares her religious views: "When they die, the righteous will resurrect on the day of the trumpet. But everyone remain in their grave for now." Body Team 12 hide caption

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A corpse has tested positive for the Ebola virus in Sierra Leone, a day after world health officials declared West Africa free of the disease. On Friday, people pass a banner reading "STOP EBOLA" — part of Sierra Leone's health campaign — in the city of Freetown. Aurelie Marrier d'Unienville/AP hide caption

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An optometrist confronts the killers responsible for his brother's death during the 1965 Indonesian genocide in The Look of Silence. Courtesy Drafthouse Films and Participant Media. hide caption

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A unidentified family member (right) of a 10-year-old boy that contracted Ebola has her temperature measured by a health worker outside an Ebola clinic on the outskirts of Monrovia, Liberia, on Nov. 20. Liberia, Guinea and Sierra Leone have now gone 42 days without a single reported case of Ebola. Abbas Dulleh /AP hide caption

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Guinea is where the Ebola outbreak started in West Africa. In this photo from November 2014, workers from the local Red Cross prepare to bury people who died of the virus. Kenzo Tribouillard /AFP/Getty Images hide caption

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5 Mysteries About Ebola: From Bats To Eyeballs To Blood

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Measles, the reorganization of the World Health Organization and the Zika virus could all make global health headlines in 2016. Rich Pedroncelli, Raphael Satter, Felipe Dana/AP hide caption

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Medical workers surround 34-day-old Noubia, the last known patient to contract Ebola in Guinea, as she was released from a Doctors Without Borders treatment center in Conakry on Nov. 28. Cellou Binani /AFP/Getty Images hide caption

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Dr. Mosoka Fallah (center), an epidemiologist who investigates cases of Ebola, meets with residents of New Kru Town, a district in Monrovia, Liberia. Daniel Berehulak/The New York Times/Redux hide caption

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Nancy Writebol, a missionary who recovered from Ebola she contracted in Liberia in 2014, told a reporter last July that she was still experiencing knee pain and hadn't fully regained her energy. Chris Keane/Getty Images hide caption

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The winner of Liberia's Integrity Idol 2015 is registered nurse Jugbeh Tarpleh Kekula. She works in the emergency room at the Liberia Government Hospital in Buchanan, the country's third-largest city with a population of some 35,000. Carielle Doe for NPR hide caption

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