This book is a great reference for epidemiology of infectious diseases. The main strength of the book is that it is packed with practical public health information, so that you don't have to wade through pages of extraneous clinical facts. In other words this is not an expanded version of the infectious disease chapters of the Merck Manual or Harrison's. Those are great references in their own right, but they're not always the most useful books to pull off the shelf when you need to consider public health measures. In the CCDM, diseases are presented in alphabetical order from AIDS to zygomycosis. Entries are broken down into the following sections: identification, infectious agent, occurence, reservoir, mode of transmission, incubation period, period of communicability, susceptibility, and methods of control. The emphasis is generally heaviest upon prevention and control. As for the negatives, the binding of the paperpack version is extremely poor (I am not sure if the hardcover is any better or not). Due to the small page size, the print is fairly small throughout, but not so much as to be really annoying. There are a couple of places in the book though (map on back cover and immunization schedule chart) where the text is so small that I'd call it illegible. Other than these instances of poor production this is a really practical and worthwhile book to own.