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‘Explosive’ diarrhea-causing parasite surging in Midwest, CDC says no risk in Bay Area
By Aaron Tolentino at KRON4 (KRON-TV)
· July 9, 2026
· 1 min read
(KRON) -- A parasite that is causing painful symptoms to the bowel is surging in Michigan. As of Wednesday, there have been nearly a thousand cases reported across the Midwestern state. The Michigan Department of Health and Human Services has reported 992 cases. Cyclospora spreads through contami...
Key takeaway The Michigan Department of Health and Human Services has reported 992 cases.
Why this matters in The San Francisco
The surge of Cyclospora cases in Michigan serves as a warning for Bay Area residents to remain vigilant about food safety, even if the Centers for Disease Control and Prevention has determined there is no risk locally. Given the region's strong affinity for fresh produce, often sourced from local farms and sold at bustling farmers' markets, it's crucial that consumers and vendors alike prioritize proper handling and washing techniques to prevent contamination. San Francisco 's thriving food scene, which heavily features fresh fruits and vegetables, could potentially be vulnerable to outbreaks if safety protocols are not strictly followed. As the Bay Area continues to monitor the situation in Michigan, local health officials should take this opportunity to review and reinforce guidelines for safe food handling practices, ensuring that the community remains protected from the risk of Cyclospora and other foodborne illnesses.
About this story
Original reporting by KRON4 (KRON-TV) . 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 KRON4 (KRON-TV) . Have a tip or correction? Contact our newsroom .
Category: local ·
Published: July 9, 2026 ·
Source: KRON4 (KRON-TV) ·
Reading time: 1 min
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Frequently asked about this story
What is this story about? (KRON) -- A parasite that is causing painful symptoms to the bowel is surging in Michigan. As of Wednesday, there have been nearly a thousand cases reported across the Midwestern state. The Michigan Department of Health and Human Services has reported 992 cases. Cyclospora spreads through contami...
When was this published? This article was first published on July 9, 2026 by KRON4 (KRON-TV) and curated for The San Francisco readers.
Who reported this story? This story was reported by Aaron Tolentino at KRON4 (KRON-TV). To learn more about how The San Francisco selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more local coverage from The San Francisco, or browse our daily briefing and topic hubs .
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