As of April 30, 2026, the CDC reports 1,814 confirmed measles cases across 37 U.S. jurisdictions, with 93% outbreak-associated amid 24 new outbreaks this year and 92% of cases among unvaccinated or unknown-status individuals. Suboptimal MMR vaccination coverage—92.5% for 2024–2025 kindergartners, below the 95% herd immunity threshold—combined with international importations drives transmission in under-vaccinated pockets, following 2,288 cases in 2025. Weekly trends show slowing increases since early-year peaks, but ongoing outbreaks in states like South Carolina and potential summer travel surges pose risks for additional cases. CDC Thursday updates and year-end surveillance will clarify the trajectory toward the annual total.
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. in 2026?
Measles cases in U.S. in 2026?
$7,653,030 Vol.
$7,653,030 Vol.
↑2k
98%
↑3k
56%
↑4k
28%
↑5k
11%
↑7.5k
12%
↑10k
10%
↑12.5k
9%
$7,653,030 Vol.
$7,653,030 Vol.
↑2k
98%
↑3k
56%
↑4k
28%
↑5k
11%
↑7.5k
12%
↑10k
10%
↑12.5k
9%
The resolution source for this market will be the CDC Measles (Rubeola) counter (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: Dec 1, 2025, 12:56 PM ET
Resolver
0x65070BE91...The resolution source for this market will be the CDC Measles (Rubeola) counter (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 April 30, 2026, the CDC reports 1,814 confirmed measles cases across 37 U.S. jurisdictions, with 93% outbreak-associated amid 24 new outbreaks this year and 92% of cases among unvaccinated or unknown-status individuals. Suboptimal MMR vaccination coverage—92.5% for 2024–2025 kindergartners, below the 95% herd immunity threshold—combined with international importations drives transmission in under-vaccinated pockets, following 2,288 cases in 2025. Weekly trends show slowing increases since early-year peaks, but ongoing outbreaks in states like South Carolina and potential summer travel surges pose risks for additional cases. CDC Thursday updates and year-end surveillance will clarify the trajectory toward the annual total.
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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