The deadly Ebola virus continues to spread in Africa, and has now even been reported in the United States. The Ebola virus is a nearly-always fatal hemorrhagic fever with no known cures, much less vaccines. It is believed to have come from human handling of wild animal carcasses in Africa, typically known as "bushmeat." Bushmeat includes any non-domesticated wild animal from tropical locations and is a common source of protein for impoverished Africans.
Colorized scanning electron micrograph of filamentous Ebola virus particles (green) attached to and budding from a chronically infected VERO E6 cell (blue) (25,000x magnification). (NIAID)