Yersiniosis is a bacterial infection primarily caused by *Yersinia enterocolitica* or *Yersinia pseudotuberculosis*. It commonly affects young children but can occur at any age, typically through consumption of contaminated food or water.
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*Yersinia enterocolitica* was first identified as a human pathogen in the mid-20th century, distinguishing it from the plague-causing *Yersinia pestis*. Its recognition helped clarify the cause of various gastrointestinal and systemic infections previously undiagnosed, increasing understanding of foodborne illnesses.
Yersiniosis primarily spreads through the fecal-oral route, often by consuming raw or undercooked pork, contaminated unpasteurized milk, or untreated water. Direct contact with infected animals, especially pigs, or their feces can also lead to transmission, as can person-to-person spread in household settings or childcare centers.
Contagious Period: Varies by disease
Local health department information and state-specific prevention guidance
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For official state health alerts, vaccination locations, and public health guidance specific to Minnesota, visit your state health department's website.
Whether you live in Minnesota or are traveling there, knowing the symptoms, timeline, and when to seek care helps you act quickly if exposure occurs.
Seek care if you experience severe dehydration, bloody stools, high fever, or symptoms lasting more than 3 days. Children under 5, adults over 65, and immunocompromised individuals should seek care earlier.
Emergency symptoms: Severe dehydration, inability to keep fluids down for 12 or more hours, or neurological symptoms require emergency care.
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Trusted information from leading health organizations
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: 2026-07-18
No confirmed cases reported in Minnesota yet. Here are the latest Yersiniosis reports from our global surveillance network.
This event envelope shares information about Yersiniosis outbreaks in Norway. Yersiniosis was the fourth most commonly reported gastrointestinal infection in the EU/EEA after campylobacteriosis, salmonellosis and Shiga toxin-producing Escherichia coli (STEC) in 2022. *Source: BE…
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