Shigellosis is an acute intestinal infection caused by Shigella bacteria. It primarily affects young children, travelers, and individuals in areas with poor sanitation, leading to severe diarrhea.
Transmission methods vary. Please consult CDC or WHO resources for specific information.
Contagious Period: Varies by disease
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Shigellosis causes an estimated 450,000 cases annually in the US, primarily through fecal-oral transmission in settings like daycare centers, food preparation, among travelers or immunocompromised groups, and via person-to-person spread in high-risk populations such as men who have sex with men (MSM) and unhoused individuals. Globally, multidrug-resistant (MDR) and extensively drug-resistant (XDR) Shigella strains have surged in recent years, complicating treatment and driving calls for enhanced surveillance.
Source: BEACON - View Full Report
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Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-03-05
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