In this photo provided by the International Rescue Committee, Congolese refugees wash their hands before being screened for Ebola symptoms at the IRC triage facility in the Kyaka II refugee settlement in Kyegegwa District in western Uganda, Thursday, June 13, 2019. The Congolese pastor who is thought to have caused the Ebola outbreak's spread into Uganda was unknown to health officials before he died of the disease, the World Health Organization's emergencies chief said Thursday, underlining the problems in tracking the virus. (Kellie Ryan/International Rescue Committee via AP)
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