FILE PHOTO: Congolese volunteer Ferdinand Tangenyi displays a flip book he uses to inform people about the Ebola virus, in Goma in the Democratic Republic of Congo, August 3, 2019.REUTERS/Baz Ratner/File Photo
FILE PHOTO: Congolese volunteer Ferdinand Tangenyi displays a flip book he uses to inform people about the Ebola virus, in Goma in the Democratic Republic of Congo, August 3, 2019.REUTERS/Baz Ratner/File Photo