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Case Definition

Confirmed Case

  • Laboratory confirmation of infection with/without symptoms: 
    • Culture isolation of Shigella spp. from an appropriate clinical specimen.

Probable Case

  • Laboratory evidence of infection with or without symptoms: 
    • Detection of Shigella spp. by PCR from an appropriate clinical specimen.

Suspect Case

  • Clinical illness in a person who is epidemiologically linked to a confirmed case.

Definition of clinical illness

  • Clinical illness is characterized by diarrhea, fever, nausea, cramps, and tenesmus. Asymptomatic infections may occur.
SOURCE: Shigella ( )
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