a plain-language professional brief Gastroenteritis doesn’t “fall from the sky.” It happens when the lining of your stomach and intestines is overwhelmed by one or more “attack factors.” Below are the common routes and culprits, followed by a one-page table so you can spot your own risk points at a glance. 1. Microbes: public enemy No. 1 Viruses – norovirus, rotavirus, adenovirus; spread faeco-orally or by droplets; famous for cruise-ship, school or nursing-home outbreaks. Bacteria – Salmonella, pathogenic E. coli, Shigella, Campylobacter; linked to under-cooked poultry, eggs, raw seafood or contaminated water. Parasites – Giardia, Cryptosporidium; hide in wild water,... Learn more