The Hot Zone by Richard Preston
I highly recommend this book, it's intriguing and scary at the same time!
A quick word of warning though, if you decide to read it just know that it's very graphic and very real!
I got a kick out of reading some of the reviews on Goodreads...click here if you dare. ;-)
The true story of how a deadly virus from the central African rain forest suddenly appears in a Washington, D.C., animal test lab. In a matter of days, 90% of the primates exposed to the virus are dead, and secret government forces are mobilized to stop the spread of this exotic "hot" virus. HC: Random House