safety
Nearly 7,000 cases of cyclosporiasis confirmed or under investigation nationwide, CDC says
By Erika Edwards | NBC News at NBC Bay Area (KNTV, NBC)
· July 14, 2026
· 3 min read
Nearly 7,000 people nationwide may have cyclosporiasis, a foodborne illness that can cause weeks of severe diarrhea, the Centers for Disease Control and Prevention said Tuesday. The bulk of the cases are in Michigan, which has confirmed 3,309 cases on its own.
In a health alert, the CDC repor...
Key takeaway The bulk of the cases are in Michigan, which has confirmed 3,309 cases on its own.
Why this matters in The San Francisco
San Francisco residents should be aware that while the majority of cyclosporiasis cases are in Michigan, the fact that at least 34 states are reporting cases means the outbreak has a national scope. The CDC's investigation into the source of the illness, potentially linked to lettuce or salad greens, is crucial for local consumers who regularly purchase produce from various suppliers. As the agency works to confirm cases and identify the source, San Francisco's own health department will likely be monitoring the situation closely, given the city's role in the national food distribution chain. The lack of a single identified supplier or product implicated in the outbreak so far suggests that the contamination could be widespread, affecting multiple types of establishments, from restaurants to grocery stores. This underscores the need for local vigilance and potentially heightened food safety measures in the city.
About this story
Original reporting by NBC Bay Area (KNTV, NBC) . 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 NBC Bay Area (KNTV, NBC) . Have a tip or correction? Contact our newsroom .
Category: safety ·
Published: July 14, 2026 ·
Source: NBC Bay Area (KNTV, NBC) ·
Reading time: 3 min
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Frequently asked about this story
What is this story about? Nearly 7,000 people nationwide may have cyclosporiasis, a foodborne illness that can cause weeks of severe diarrhea, the Centers for Disease Control and Prevention said Tuesday. The bulk of the cases are in Michigan, which has confirmed 3,309 cases on its own.
In a health alert, the CDC repor...
When was this published? This article was first published on July 14, 2026 by NBC Bay Area (KNTV, NBC) and curated for The San Francisco readers.
Who reported this story? This story was reported by Erika Edwards | NBC News at NBC Bay Area (KNTV, NBC). To learn more about how The San Francisco selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more safety coverage from The San Francisco, or browse our daily briefing and topic hubs .
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