Ongoing measles transmission in under-vaccinated communities continues to drive U.S. case counts, with the CDC reporting 2,073 confirmed cases as of June 11, 2026—already approaching the full-year 2025 total of 2,288. Ninety-three percent of 2026 cases link to 30 outbreaks, predominantly among individuals unvaccinated or with unknown MMR status, reflecting sustained endemic circulation after the Americas lost elimination status in late 2025. Recent weekly additions of 40–60 cases underscore active chains in multiple states, though public health containment and seasonal patterns may moderate further growth before June 30. CDC’s weekly surveillance updates, including any new outbreak declarations or revised counts, represent the key near-term data releases that could shift trader-implied probabilities on final June 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 June 30?
$97,924 Vol.
2140
No
2150
No
2200
No
2300
No
2400
No
$97,924 Vol.
2140
No
2150
No
2200
No
2300
No
2400
No
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: Jun 23, 2026, 2:11 PM ET
Resolver
0x65070BE91...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
Ongoing measles transmission in under-vaccinated communities continues to drive U.S. case counts, with the CDC reporting 2,073 confirmed cases as of June 11, 2026—already approaching the full-year 2025 total of 2,288. Ninety-three percent of 2026 cases link to 30 outbreaks, predominantly among individuals unvaccinated or with unknown MMR status, reflecting sustained endemic circulation after the Americas lost elimination status in late 2025. Recent weekly additions of 40–60 cases underscore active chains in multiple states, though public health containment and seasonal patterns may moderate further growth before June 30. CDC’s weekly surveillance updates, including any new outbreak declarations or revised counts, represent the key near-term data releases that could shift trader-implied probabilities on final June 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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