In this photo taken Sunday, Sept 9, 2018, a health worker sprays disinfectant on his colleague after working at an Ebola treatment centre in Beni, Eastern Congo. The current Ebola outbreak in northeastern Congo has become a testing ground with one aid group for the first time treating confirmed Ebola victims in individual biosecure units used in emergencies involving highly infectious diseases. (AP Photo/Al-hadji Kudra Maliro) **FILE**
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