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Outbreak of diarrhea caused by cyclosporiasis spreading in US with cases reported in CA, CDC says
By ABCNews at ABC7 News (KGO-TV, ABC)
· July 11, 2026
· 1 min read
Cases of cyclosporiasis, an intestinal infection caused by a parasite, are currently being reported in nearly three dozen states, according to an ABC News tally, including California. The most common symptom of cyclosporiasis is watery diarrhea "with frequent and sometimes explosive bowel movemen...
Key takeaway The most common symptom of cyclosporiasis is watery diarrhea "with frequent and sometimes explosive bowel movements," according to the CDC.
Why this matters in The San Francisco
San Francisco residents should be aware that the outbreak of cyclosporiasis is not limited to other parts of the country, as California is among the nearly three dozen states reporting cases. The Centers for Disease Control and Prevention's description of the infection's symptoms, including watery diarrhea with frequent and sometimes explosive bowel movements, suggests that local healthcare providers will need to be vigilant in diagnosing and treating the illness. Given the parasite's impact on the intestinal tract, San Francisco's public health infrastructure will likely play a critical role in containing the outbreak and preventing further spread. The city's experience with past outbreaks of foodborne and waterborne illnesses may inform its response to this current public health concern, and local officials will need to work closely with state and federal agencies to track the outbreak and provide guidance to residents on how to protect themselves.
About this story
Original reporting by ABC7 News (KGO-TV, ABC) . The San Francisco surfaces reporting from trusted publishers and adds local editorial context so readers can quickly understand what a story means for their community. We attribute every source, link to the original report, and follow a documented editorial standards policy. To understand how stories are selected and reviewed, read our about page .
For the complete original report, visit ABC7 News (KGO-TV, ABC) . Have a tip or correction? Contact our newsroom .
Category: library ·
Published: July 11, 2026 ·
Source: ABC7 News (KGO-TV, ABC) ·
Reading time: 1 min
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Frequently asked about this story
What is this story about? Cases of cyclosporiasis, an intestinal infection caused by a parasite, are currently being reported in nearly three dozen states, according to an ABC News tally, including California. The most common symptom of cyclosporiasis is watery diarrhea "with frequent and sometimes explosive bowel movemen...
When was this published? This article was first published on July 11, 2026 by ABC7 News (KGO-TV, ABC) and curated for The San Francisco readers.
Who reported this story? This story was reported by ABCNews at ABC7 News (KGO-TV, ABC). To learn more about how The San Francisco selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more library coverage from The San Francisco, or browse our daily briefing and topic hubs .
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