[blam]

"Sounds like bubonic plague, the pneumonic form. Some people think Black Death was actually Ebola virus because it was seen in areas not heavily infested by rats. Some people Ebola is responsible for plagues."

Yup. I saw a one hour program on the Black Death and one scientist said that at least two killing 'agents' were going on then.

[Ptarmigan]

I have read that Black Death was likely caused by more than one diseases, ranging from bubonic plague, anthrax, and possibly Ebola.