As of August 20, 2026, the CDC has confirmed 2,777 measles cases for the year, with 94% linked to 36 ongoing outbreaks and the majority occurring in under-vaccinated children and adolescents. Recent weekly additions of 211 cases—driven primarily by surges in Pennsylvania and Ohio—reflect sustained community transmission in pockets of low MMR immunization coverage, consistent with patterns observed since 2025 when totals reached a 35-year high. CDC surveillance updates, typically released Thursdays, will provide the final count through August 31, incorporating any newly reported confirmed infections meeting the standard clinical and laboratory criteria. Historical data show measles' high contagiousness (R0 of 12–18) enables rapid escalation when introduction occurs in susceptible groups.
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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$2,440 Vol.
2800+
99%
2825+
93%
2850+
90%
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 for the year, with 94% linked to 36 ongoing outbreaks and the majority occurring in under-vaccinated children and adolescents. Recent weekly additions of 211 cases—driven primarily by surges in Pennsylvania and Ohio—reflect sustained community transmission in pockets of low MMR immunization coverage, consistent with patterns observed since 2025 when totals reached a 35-year high. CDC surveillance updates, typically released Thursdays, will provide the final count through August 31, incorporating any newly reported confirmed infections meeting the standard clinical and laboratory criteria. Historical data show measles' high contagiousness (R0 of 12–18) enables rapid escalation when introduction occurs in susceptible groups.
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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