Ongoing measles transmission in the United States, fueled by declining MMR vaccination coverage now at 92.4% among kindergartners and rising exemptions, continues to drive case counts higher amid multiple active outbreaks. As of August 20, 2026, the CDC reports 2,777 confirmed cases across 45 states and jurisdictions—94% among unvaccinated or unknown-status individuals, with 7% hospitalized and the first two deaths of the year confirmed in Pennsylvania on August 25. Weekly CDC surveillance updates, including the next expected around late August, provide the key data releases before the August 31 resolution window. School reopenings and sustained community transmission in hotspots like Pennsylvania and Ohio represent the main near-term variables that could accelerate or slow additional confirmations.
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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98%
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$3,693 Vol.
2800+
99%
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98%
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94%
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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...Ongoing measles transmission in the United States, fueled by declining MMR vaccination coverage now at 92.4% among kindergartners and rising exemptions, continues to drive case counts higher amid multiple active outbreaks. As of August 20, 2026, the CDC reports 2,777 confirmed cases across 45 states and jurisdictions—94% among unvaccinated or unknown-status individuals, with 7% hospitalized and the first two deaths of the year confirmed in Pennsylvania on August 25. Weekly CDC surveillance updates, including the next expected around late August, provide the key data releases before the August 31 resolution window. School reopenings and sustained community transmission in hotspots like Pennsylvania and Ohio represent the main near-term variables that could accelerate or slow additional confirmations.
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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