Travelers visiting many tropical, sub-tropical and developing countries run an increased risk of suffering a gastrointestinal illness. These are usually caused by bacteria, parasites and viruses. The microscopic bugs at the top of these rather gut wrenching (for all the wrong reasons…) charts are E Coli, the staphylococci, shigella and salmonella species, campylobacter jejuni, cryptosporidiosis, and hepatitis A. Infected food…