This book was so INTENSE!....It had some gruesome aspects to it that were absolutely fascinating in the fact that one does not usually read about the procedures done in an autopsy or the detailed results of a biochemical virus as it destroys a human being. There were parts that were a bit dry that had to do with government information and such.....but for the most part this book was really good and hard to put down......the ending subway tunnels scenario was so intense I was just squirming and hoping it would end soon......WOW.....just have fun reading this book!!!