gastroenteritis

adenovirus anatomical anatomy bacteria body bowel bug caliciviridae cancer coli colitis colon constipation diagram diarrhea digestion digestive disease enteric epidemic escherichia gastroenteritis gastrointestinal gut health human ill illness illustration indigestion infection infectious inflammation internal intestinal intestine intestines large medical medicine microbe microorganism norovirus norwalk organ pain rotavirus science sickness small stomach syndrome system tract vector virus viruses vomiting