The U.S. measles cases 2026 market is a threshold ladder: traders price the odds that confirmed CDC case counts clear specific levels by year end, from a few thousand cases up past 12,500. It carries roughly $8.3M in cumulative volume across Kalshi and Polymarket, with rungs that climb from 2,150 cases to 12,500. The live board above ranks the current cross-platform prices on each threshold. The market resolves December 31, 2026, against the CDC's official tally.
The U.S. measles cases 2026 market is built as a ladder of case-count thresholds rather than one yes-or-no question. Each rung asks whether confirmed cases will reach a given level by the end of the year, and the rungs run from 2,150 cases up through 3,000, 4,000, 5,000, 6,000, 7,500, 8,000, 10,000, and 12,500. Lower thresholds price near-certain, higher thresholds price as long shots, and the spread between them is the market's read on how bad the year gets. The board carries roughly $8.3M in cumulative volume across two platforms.
Because this is a ladder, there is no single favored candidate to name. The data renders as a row of thresholds, each with its own Kalshi and Polymarket price, and the empty candidates list is expected rather than a defect. The structure mirrors how the underlying contracts are listed: separate "at least N cases" markets on each platform, grouped into one board so the rungs read as a single curve.
Reading the ladder is straightforward. A high price on a low threshold means the market treats that floor as a near-lock, while prices fall as the thresholds climb toward outcomes the market views as unlikely. Where both platforms list the same rung, the cross-platform comparison shows whether Kalshi and Polymarket agree on the odds at that level. The live board above carries the current price on every threshold, so the curve there is the live picture rather than anything transcribed here.
What the ladder ultimately tracks is the pace of confirmed measles spread across the country relative to the count already on the books. The thresholds are fixed; the only variable is how quickly the running CDC total moves toward each one before the calendar closes.
The single largest driver is the trajectory of new confirmed cases reported by the CDC. Measles spreads in clusters, so a multi-state outbreak or a large outbreak in an undervaccinated community can move several rungs of the ladder at once, while a quiet stretch flattens the curve and pushes the higher thresholds toward zero.
Vaccination coverage sits underneath all of it. Local MMR rates determine how far any single introduction spreads, and counties or communities with low coverage are where the count tends to accelerate. Containment speed matters just as much: how fast public-health teams trace contacts and isolate cases shapes whether a cluster stays small or compounds into the kind of total that lifts the 7,500-and-up rungs.
Timing is the quiet factor on a year-end ladder. Because the market resolves against the full-year count, an outbreak late in the year still counts, and the running total only moves in one direction. That makes each new reporting update through the fall a potential catalyst on the higher thresholds.
The market resolves December 31, 2026, against the U.S. measles case count for the calendar year as reported by the Centers for Disease Control and Prevention. Each threshold rung resolves Yes if the confirmed national total reaches or exceeds that rung's case number, and No if it does not. The CDC's published tally is the source of truth, and because the count accumulates over the year, a rung that has already cleared its threshold stays settled at Yes.
For adjacent public-health and forward-looking contracts, compare the pandemic 2026 odds and the NASA crewed moon landing odds. Browse the full tech prediction markets hub for more science and biotech boards, and see Genius Staff's analysis for how these markets are tracked across platforms.
Resolves December 31, 2026, against the U.S. measles case count for the calendar year as reported by the Centers for Disease Control and Prevention. The market is a ladder of fixed thresholds running from 2,150 cases through 12,500 cases; each rung resolves Yes if the confirmed national total reaches or exceeds that rung's number and No if it does not. The CDC's published full-year tally is the source of truth. Because the count accumulates, a rung whose threshold has already been cleared stays settled at Yes, and any platform-specific tie-breaking or void rules apply if the official count is unavailable at resolution.
The market is a ladder of CDC case-count thresholds from 2,150 up through 12,500, each priced separately on Kalshi and Polymarket. The live board above shows the current cross-platform price on every rung, with roughly $8.3M in cumulative volume across the two platforms.
It resolves December 31, 2026, against the U.S. measles case count for the calendar year as reported by the CDC. Each rung resolves Yes if the confirmed national total reaches or exceeds that threshold.
Both Kalshi and Polymarket list case-count thresholds for 2026, and Prediction Genius groups them into one ladder so you can compare the two platforms on each shared rung, such as the 3,000, 4,000, and 10,000 levels.
It is a threshold ladder, not a multi-candidate race, so the data renders as a row of case-count rungs from 2,150 to 12,500 rather than named candidates. The empty candidates list is expected for a ladder market, not an error.
Watch the CDC's running national case total and any new multi-state outbreaks through the fall, since the year-end count only climbs and a late cluster can still lift the higher 7,500-and-up thresholds before December 31, 2026.