Ongoing measles transmission in the US, driven by sub-95% MMR vaccination coverage and multiple persistent outbreaks, is pushing cumulative 2026 case counts well above prior years. As of August 20, the CDC reported 2,777 confirmed cases across 47 jurisdictions, with 94% in unvaccinated or unknown-status individuals, 66% among children and teens, and 94% outbreak-linked; Pennsylvania and Ohio added the largest recent weekly increments. School reopenings in late August and September are expected to accelerate spread in under-vaccinated communities, while weekly CDC surveillance updates will provide the authoritative counts used for resolution. Historical elimination status reviews underscore how sustained chains of transmission threaten official benchmarks.
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 September 30?
2900+
97%
3000+
94%
$1,253 Vol.
2900+
97%
3000+
94%
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, 11:00 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...Ongoing measles transmission in the US, driven by sub-95% MMR vaccination coverage and multiple persistent outbreaks, is pushing cumulative 2026 case counts well above prior years. As of August 20, the CDC reported 2,777 confirmed cases across 47 jurisdictions, with 94% in unvaccinated or unknown-status individuals, 66% among children and teens, and 94% outbreak-linked; Pennsylvania and Ohio added the largest recent weekly increments. School reopenings in late August and September are expected to accelerate spread in under-vaccinated communities, while weekly CDC surveillance updates will provide the authoritative counts used for resolution. Historical elimination status reviews underscore how sustained chains of transmission threaten official benchmarks.
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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