As of August 20, 2026, the CDC has confirmed 2,777 measles cases nationwide for the year, with 211 new cases added in the most recent weekly update—more than double the prior week’s increase. Primary drivers include sustained transmission in Pennsylvania and Ohio outbreaks, where 94% of cases are outbreak-associated and 94% occur among unvaccinated or unknown-status individuals. Ongoing summer travel and low MMR coverage (around 92% among kindergartners) sustain chains of infection. Traders monitor CDC’s next data release and state health reports through August 31 for any surge tied to recent exposures or reporting lags, while noting measles’ high contagiousness (R0 of 12–18) and typical incubation period of 10–14 days.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMeasles cases in U.S. by August 31?
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99%
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93%
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$2,294 Vol.
2800+
99%
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93%
The resolution source for this market will be the CDC Measles (Rubeola) counter 'Total Cases' in 2026 (see: https://www.cdc.gov/measles/data-research/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used.
Note: Only cases reported by the CDC Measles (Rubeola) counter will qualify, regardless of reports from U.S. State agencies or other sources.
Market Opened: Aug 24, 2026, 10:08 AM ET
Resolver
0x65070BE91...The resolution source for this market will be the CDC Measles (Rubeola) counter 'Total Cases' in 2026 (see: https://www.cdc.gov/measles/data-research/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used.
Note: Only cases reported by the CDC Measles (Rubeola) counter will qualify, regardless of reports from U.S. State agencies or other sources.
Resolver
0x65070BE91...As of August 20, 2026, the CDC has confirmed 2,777 measles cases nationwide for the year, with 211 new cases added in the most recent weekly update—more than double the prior week’s increase. Primary drivers include sustained transmission in Pennsylvania and Ohio outbreaks, where 94% of cases are outbreak-associated and 94% occur among unvaccinated or unknown-status individuals. Ongoing summer travel and low MMR coverage (around 92% among kindergartners) sustain chains of infection. Traders monitor CDC’s next data release and state health reports through August 31 for any surge tied to recent exposures or reporting lags, while noting measles’ high contagiousness (R0 of 12–18) and typical incubation period of 10–14 days.
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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