A major 2026 cyclosporiasis outbreak has driven elevated U.S. case counts through the typical May–July seasonal peak, with CDC confirming domestically acquired infections across multiple states linked primarily to contaminated fresh produce such as lettuce. As of late July, Michigan alone reported over 10,000 cases, while a single multistate cluster tied to Taco Bell locations exceeded 1,644 illnesses; Washington and other states added dozens more. These totals far surpass historical baselines of 200–1,000 annual illnesses from roughly a dozen outbreaks. Official CDC surveillance data through July 31 will incorporate delayed laboratory reports and interviews, with final national figures subject to revision. Traders monitoring resolution should watch for any CDC updates on total confirmed cases meeting the market’s geographic and temporal criteria.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCyclosporiasis cases in U.S. by July 31?
$50,926 Vol.
5000+
Yes
7500+
No
10000+
No
1800+
Yes
2000+
Yes
2500+
Yes
3000+
Yes
$50,926 Vol.
5000+
Yes
7500+
No
10000+
No
1800+
Yes
2000+
Yes
2500+
Yes
3000+
Yes
The resolution source for this market will be the CDC Surveillance of Cyclosporiasis page’s “U.S. cases reported to CDC” count (see: https://www.cdc.gov/cyclosporiasis/php/surveillance/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used.
Note: Only cases reported by the CDC as confirmed domestically acquired cases of cyclosporiasis will qualify, regardless of reports from U.S. State agencies or other sources. Travel-associated cases acquired outside the United States will not qualify.
Market Opened: Jul 14, 2026, 9:55 PM ET
Resolver
0x65070BE91...Outcome proposed: Yes
No dispute
Final outcome: Yes
The resolution source for this market will be the CDC Surveillance of Cyclosporiasis page’s “U.S. cases reported to CDC” count (see: https://www.cdc.gov/cyclosporiasis/php/surveillance/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used.
Note: Only cases reported by the CDC as confirmed domestically acquired cases of cyclosporiasis will qualify, regardless of reports from U.S. State agencies or other sources. Travel-associated cases acquired outside the United States will not qualify.
Resolver
0x65070BE91...Outcome proposed: Yes
No dispute
Final outcome: Yes
A major 2026 cyclosporiasis outbreak has driven elevated U.S. case counts through the typical May–July seasonal peak, with CDC confirming domestically acquired infections across multiple states linked primarily to contaminated fresh produce such as lettuce. As of late July, Michigan alone reported over 10,000 cases, while a single multistate cluster tied to Taco Bell locations exceeded 1,644 illnesses; Washington and other states added dozens more. These totals far surpass historical baselines of 200–1,000 annual illnesses from roughly a dozen outbreaks. Official CDC surveillance data through July 31 will incorporate delayed laboratory reports and interviews, with final national figures subject to revision. Traders monitoring resolution should watch for any CDC updates on total confirmed cases meeting the market’s geographic and temporal criteria.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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