Since Monday, I have been tracking the news about an outbreak of the Marburg hemorrhagic fever, a really nasty virus, in Angola.
Try this article for some scary reading, especially the following (emphasis mine):
“The latest figures available show the disease had killed 117 out of 124 people known to be infected by Tuesday. The Centers for Disease Control and Prevention in Atlanta says the usual death rate is 23 percent to 25 percent, but few infected patients are reported to have recovered this outbreak. There is no known cure.”