As of late May 2026, the CDC reports 1,983 confirmed measles cases nationwide this year, with 93% linked to ongoing outbreaks across 40 jurisdictions and 92% occurring among unvaccinated individuals or those with unknown status. Primary drivers include sustained community transmission in under-vaccinated populations, imported cases from international travel, and lower MMR coverage in affected areas compared with national averages. Historical precedent shows U.S. totals exceeded 2,000 cases in 2025 for the first time since 1992, and weekly CDC surveillance updates through June will track whether additional summer travel-related importations push the cumulative count higher before the June 30 resolution window.
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 June 30?
$20,833 Vol.
2150
29%
2200
10%
2300
3%
2400
3%
$20,833 Vol.
2150
29%
2200
10%
2300
3%
2400
3%
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: May 28, 2026, 11:08 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 late May 2026, the CDC reports 1,983 confirmed measles cases nationwide this year, with 93% linked to ongoing outbreaks across 40 jurisdictions and 92% occurring among unvaccinated individuals or those with unknown status. Primary drivers include sustained community transmission in under-vaccinated populations, imported cases from international travel, and lower MMR coverage in affected areas compared with national averages. Historical precedent shows U.S. totals exceeded 2,000 cases in 2025 for the first time since 1992, and weekly CDC surveillance updates through June will track whether additional summer travel-related importations push the cumulative count higher before the June 30 resolution window.
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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