Pretty conventional modern vampire fiction (vampirism is a disease that threatens to destroy humanity, usw.) but very well-paced and enjoyable. The authors do a good job of managing a number of characters and making them all fit into the plot. I thought at first that the story was being stretched too thin, that too many ancillary characters were getting too much screen time, but everything comes together in satisfactory fashion by the end of the book. One thing I didn't like was the way the book tried to explain the biomedical aspects of the vampirism virus. In a book about a Holocaust survivor devoting his life to hunting a centuries old giant vampire with the help of a CDC doctor and a rat exterminator, scientifically realistic descriptions of the biological workings of vampirism aren't really necessary.