**Ongoing domestic transmission in multiple states, fueled by declining MMR vaccination rates and 36 active outbreaks, continues to drive rapid case growth toward the September 30 resolution.** CDC data through August 20, 2026, show 2,777 confirmed measles cases—the highest annual total since 1991—with 94% occurring in unvaccinated or unknown-status individuals and 94% outbreak-linked. Recent weekly additions reached 211 cases, concentrated in Pennsylvania and Ohio hotspots, alongside the first 2026 deaths in unvaccinated Pennsylvania residents. Model consensus from public health surveillance indicates sustained spread through early fall, with kindergarten MMR coverage at 92.4% and exemption rates rising to 4.2%. Weekly CDC updates and state reports through September will provide the key data releases that could shift market-implied odds on final cumulative totals.
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+
99%
3000+
98%
3100+
97%
3200+
68%
$2,035 Vol.
2900+
99%
3000+
98%
3100+
97%
3200+
68%
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 domestic transmission in multiple states, fueled by declining MMR vaccination rates and 36 active outbreaks, continues to drive rapid case growth toward the September 30 resolution.** CDC data through August 20, 2026, show 2,777 confirmed measles cases—the highest annual total since 1991—with 94% occurring in unvaccinated or unknown-status individuals and 94% outbreak-linked. Recent weekly additions reached 211 cases, concentrated in Pennsylvania and Ohio hotspots, alongside the first 2026 deaths in unvaccinated Pennsylvania residents. Model consensus from public health surveillance indicates sustained spread through early fall, with kindergarten MMR coverage at 92.4% and exemption rates rising to 4.2%. Weekly CDC updates and state reports through September will provide the key data releases that could shift market-implied odds on final cumulative totals.
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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