Upon ingestion, the bacteria pass through the gastrointestinal tract until they reach the small intestine. There they begin to multiply until they reach the large intestine. In the large intestine, the bacteria cause cell injury and the beginning stages of<unk>  via two main mechanisms: direct invasion of epithelial cells in the large intestine and production of enterotoxin 1 and enterotoxin 2. Unlike other bacteria, Shigella is not destroyed by the gastric acid in the stomach. As a result, it takes only 10 to 200 cells to cause an infection. This infectious dose is several order of magnitudes smaller than that of other species of bacteria (e.g. cholera, caused by the bacterium Vibrio cholerae, has an infectious dose between 108 and 1011 cells).
Shigellosis
Brucellosis
Salmonellosis
Bartonellosis
Bacillary dysentery
Travelers' diarrhea
Campylobacteriosis
Porcine epidemic diarrhoea