epidemics and plagues in western Africa, Cameroon, Nigeria, South Sudan, Chad, the Democratic Republic of the Congo, Ethiopia, Ivory Coast, Niger, Uganda, Afghanistan, Bolivia, Haiti, El Salvador, Honduras, Guatemala and Nicaragua;
epidemiat ja kulkutaudit: Länsi-Afrikka, Kamerun, Nigeria, Etelä-Sudan, Tšad, Kongon demokraattinen tasavalta, Etiopia, Norsunluurannikko, Niger, Uganda, Afganistan, Bolivia, Haiti, El Salvador, Honduras, Guatemala ja Nicaragua;