Dr. Graham assembles an excellent group of authors to review bacterial and viral causes of infection in the gastrointestinal tract. Also included is coverage of when and how to test for H. pylori, and HIV-related diarrhea and liver disease. Key words: H.Pylori, C.difficile diarrhea, Treatment of Hepatitis C, Norovirus, Travelers diarrhea, Acute bacterial enteritis, Post- Infectious IBS, Treatment of HepatitisB, Giardia/Cryptosporidium, Appendicitis/Diverticulitis,...