Cyclosporiasis Outbreak

The outbreak investigation has been closed. No additional cases have been identified associated with this outbreak, and there is currently no evidence of ongoing transmission. The West Virginia Department of Health will continue routine disease surveillance and will respond to any new reports as appropriate.

Last updated: September 11, 2026

West Virginia Case Counts

Total Cases: 315

To date, 21 reported cases indicated they had been hospitalized.

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Data notes

Case counts reflect all cases of cyclosporiasis reported during the outbreak investigation period and may change as additional information becomes available.

• Total case counts and hospitalization status and detailed outbreak data are updated on Fridays.
   

News and Updates

• HEALTH ADVISORY #236 Test Patients with Symptoms Consistent of Cyclospora Infection 
• FDA Advisory
• CDC Outbreak Page
   

Resources

• About Cyclosporiasis CDC - Symptoms, how it spreads, diagnosis, and treatment.
• Preventing Cyclosporiasis CDC - Steps to reduce the risk of cyclosporiasis and other foodborne illnesses.
• Cyclosporiasis - CDC Provider Fact Sheet 
• Cyclosporiasis - CDC Public Fact Sheet
• Cyclosporiasis - CDC Public Fact Sheet: Spanish 
• Cyclosporiasis Info Sheet