Will there be between 1650 and 1699 measles cases in the U.S. on December 31?Will there be 1850+ measles cases in the U.S. on December 31?Will there be between 1800 and 1849 measles cases in the U.S. on December 31?Will there be between 1700 and 1749 measles cases in the U.S. on December 31?Will there be between 1600 and 1649 measles cases in the U.S. on December 31?Will there be between 1750 and 1799 measles cases in the U.S. on December 31?Will there be fewer than 1550 measles cases in the U.S. on December 31?Will there be between 1550 and 1599 measles cases in the U.S. on December 31?This market will resolve according to the number of confirmed cases of Measles (Rubeola) in humans in the territory of the United States of America in 2025, according to the CDC case counter on December 31, 2025, 11:59 PM ET. 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.
Polymarket uses a central limit order book (CLOB) model β you can buy or sell shares of any outcome at the current market price, or place limit orders. Prices represent implied probability: a $0.65 contract means the market prices a 65% chance of that outcome.