Western African Ebola virus epidemic
The 2013–2016 epidemic of Ebola virus disease, centered in Western Africa, was the most widespread outbreak of the disease in history. It caused many deaths and socioeconomic problems in the region, mainly in Guinea, Liberia and Sierra Leone. The first cases were recorded in Guinea in December 2013; later, the disease spread to Liberia and Sierra Leone, with minor outbreaks occurring  in Nigeria and Mali.