What is the prognosis of 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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  • Most patients recover even without treatment, although illness is more prolonged and more severe if not treated.

    • The fever usually lessens within 24 hours.

    • Frequency of stool decreases within 2-3 days.

    • Carrier state usually ceases within 4 weeks of onset of illness even without antimicrobial treatment and chronic carrier state (>1 y) is rare.

  • The overall mortality rate in developed countries is less than 1%. In the Far East and Middle East, the mortality rates for infections of S dysenteriae may be as high as 20-25%.

  • Severely malnourished children with shigellosis and hypoglycemia, hypothermia, altered consciousness, and/or bronchopneumonia are at high risk of dying.

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