Since it's 1st recorded outbreak (1976) in the Democratic Republic of the Congo's Ebola River Valley, the Ebola virus has been known - and feared - for good reason.
Why, you may ask?
Ebola hemorrhagic fever is potentially lethal and encompasses a range of symptoms including fever, vomiting, diarrhea, generalized pain or malaise, and sometimes internal and external bleeding. The span of time from onset of symptoms to death is usually between 2 and 21 days. By the second week of infection, patients will either defervesce (the fever will lessen) or undergo systemic multi-organ failure.
Here's the real kicker:mortality rates are typically high, with the human case-fatality rate ranging from 50 to 89%, depending on the viral strain.