I was disappointed by this book. While the subject matter is potentially fascinating: Researching biological terrorism and the remaining smallpox virus in the aftermath of the 9/11 attacks-- the delivery was sterile and unengaging. Those who read the book for squeamish details will be bored, those who expected a novel will be disappointed. While the information contained therein is useful, the delivery left much to be desired. It would be easier and faster to simply read the CDC website.