AIDS Epidemic
AIDS is one of the worst epidemics that is still happening to this day. Since it was first recognized, AIDS has killed almost 35 million victims. AIDS starts as the virus HIV, which most likely has its roots in a chimpanzee virus that spread to people in West Africa. About 64% of the 40 million with HIV reside in sub-Saharan Africa. It has been considered a pandemic since the 20th century.