Some of the infectious diseases seen in sub-Saharan Africa in recent years, such as Rickettsia felis, a variety of cat-flea typhus, and the bacteria which causes Whipple's disease, are newly discovered. Others are historically well known, such as cholera and the bubonic plague. Still others, such as Ebola and Zika, are previously known diseases from elsewhere but have seen their first large outbreaks in the area.
