Cyclospora Outbreak in US and UK Sees Over 18,000 Cases, Test Positivity May Be Dropping

1-Minute Brief

The cyclospora outbreak has become the largest on record in the US and is affecting international travelers, raising public health concerns.

Key Facts

• 67 cyclospora cases have been reported in returning UK travelers, according to The Independent.
• A laboratory test-maker reported a recent drop in cyclospora test positivity rates in the US.
• The outbreak in the US has grown to more than 18,000 suspected and confirmed cases in late July.
• Christina Hart, a 29-year-old food reviewer, stopped posting after contracting a stomach illness identified as cyclospora.
• The Midwest region of the US has been particularly affected by the outbreak.

What Happened

A cyclospora outbreak has resulted in over 18,000 suspected and confirmed cases in the US and 67 reported cases among UK travelers. Some data suggest test positivity rates may be declining.

Why It Matters

The scale of the outbreak is unprecedented in the US, with international implications for travelers. Monitoring trends in test positivity and regional impact is important for public health response. Test-maker data on declining positivity rates may be influenced by the number of people taking the test, according to The Guardian.

What's Next

Health officials and test-makers are monitoring the outbreak's progression and test positivity rates. Further updates on case numbers and regional trends are expected as more data become available.