Shigella is a genus of gram-negative, facultative anaerobic Enterobacteriaceae that includes S. dysenteriae, S. flexneri, S. boydii, and S. sonnei. A serum epidemiological survey of poultry flocks in China with a history of dysentery showed that the seroprevalence of Shigella was 28.3–33.7%, suggesting that Shigella is an important etiology of chicken dysentery in China.

Virulent Shigella is a tissue specific organism, which invades the large intestines of chickens, specifically the intestinal epithelial cells, causing dysentery and other intestinal clinical signs.

Shigella is transmitted primarily by fecal-ooral route.


  • humans
  • monkeys
  • rabbits
  • calves
  • piglets
  • chickens

Associated Diseases