An illness of variable severity characterized by diarrhea, fever, nausea, cramps, and tenesmus. Asymptomatic infections may occur.
Suspect: Detection of Shigella from a clinical specimen using a non-culture based method. Confirmed: Isolation of Shigella from a clinical specimen.
A case that meets the suspect laboratory criteria for diagnosis.
A clinically compatible case that is epidemiologically linked, i.e., is a contact of a confirmed case or a member of a risk group defined by public health authorities during an outbreak.
A case that meets the confirmed laboratory criteria for diagnosis. When available, O antigen serotype characterization should be reported.
Both asymptomatic infections and infections at sites other than the gastrointestinal tract, if laboratory confirmed, are considered confirmed cases that should be reported