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Event Brief

US cyclosporiasis outbreak likely undercounted

Officials say official case counts miss many cyclosporiasis infections and the outbreak may worsen.
WHO: Jeanne Marrazzo, Infectious Diseases Society of America
WHAT: Marrazzo said underdiagnosis and lack of routine testing mean actual cyclosporiasis cases are likely higher than reported.
WHEN: Jul 15, 2026 at 5:30 AM ET
WHERE: USA
WHY: Tainted lettuce was identified as the likely culprit, and many cases are not counted due to underdiagnosis and mild infections.
How this story developed (showing 3 of 3 earlier reports)

Reporting from 6 identified publishers across this event arc.

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Publishers represented across this event arc

These publishers contributed reporting to the broader event history. Not every source addresses the specific development described above.

How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.

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