Dysentery = Passing of  (sometimes very) frequent stools which may contain blood, mucus or pus.

  • Shigella dysenteriae is the cause of bacillary dysentery – usually in croweded unsanitary conditions.
  • Other species of shigella may produce milder diarrhoeal conditions
  • It’s an oral infection
  • Faecal – oral transmission
  • 1 – 4 day incubation
  • During the incubation period
    • bacteria penetrate mucosal epithelial cells of intestine
    • causes intense irrritation
    • which causes cramps and watery bloody diarrhoea
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  • Amoebiasis (Amoebic dysentery) is commonly asympotomatic
  • Cysts are present in faeces
  • Symptoms can develop later
    • lower abdo pain
    • diarrhoea
  • Dysentery can then develop if it’s left untreated