What causes Shigella infection?

Updated: Apr 03, 2018
  • Author: Jaya Sureshbabu, MBBS, MRCPCH(UK), MRCPI(Paeds), MRCPS(Glasg), DCH(Glasg); Chief Editor: Russell W Steele, MD  more...
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See the list below:

  • The primary mode of transmission of Shigella infection is fecal-oral contamination by the gram-negative aerobic bacilli.

  • Contaminated food usually looks and smells normal. Food may become contaminated by infected food handlers who forget to wash their hands with soap after using the bathroom. Vegetables can become contaminated if they are harvested from a field with sewage in it.

  • Outbreaks of shigellosis have also occurred among men who have sex with men.

  • Travellers from developed to developing regions and soldiers serving under field conditions are also at an increased risk to develop shigellosis.

  • Shigellosis can be caused by exposure to contaminated treated water and, more likely, from untreated recreational water.

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