There is a decent PBS documentary for any flu freaks.
Personally, I am an Ebola man, and I recommend this book:
The Hot Zone is a best-selling 1994 non-fiction bio-thriller by Richard Preston about the origins of incidents involving hemorrhagic fevers and both the Ebola and Marburg viruses.
Very interesting reading. Vivid.
Apropos the book The Hot Zone:
In his blurb, Stephen King called the book, "one of the most horrifying things I've ever read."