Comment by Grosvenor

Try Michael Crichtons "The hot zone".

https://en.wikipedia.org/wiki/The_Hot_Zone

There's entire chapters of this:

"The author describes the progression of the disease, from the initial headache and backache, to the final stage in which Monet's internal organs fail and he hemorrhages extensively in a waiting room in a Nairobi hospital. "

Edit: Richard Preston, not Michael Chrichton. Not sure what I was thinking.