Measles Cases Hit 2200 in U.S. Before July Ends?

The U.S. measles outbreak has become one of the most closely watched public health stories of 2026. The CDC has been tracking a sustained surge in confirmed cases since January, and the trajectory points sharply upward. The market has already priced this as nearly settled: there is a 91.6% implied probability that confirmed U.S. measles cases will reach 2,200 by July 31.

The market question asks whether U.S. measles cases will hit 2,200 by July 31, 2026. YES trades at $0.92 and NO at $0.08. Total volume stands at $7,686, with $7,664 of that arriving in the last 24 hours. Resolution follows the CDC’s official confirmed case count.

How the Measles Case Count Contract Works

YES pays out if the CDC confirms 2,200 or more U.S. measles cases by 11:59 PM on July 31, 2026. NO pays out if the CDC count stays below that threshold by the deadline. The CDC’s weekly Morbidity and Mortality Weekly Report and its dedicated measles outbreak tracker serve as the authoritative data source for resolution.

• YES ($0.92): CDC confirms at least 2,200 measles cases by July 31, 2026, at 91.6% implied probability.
• NO ($0.08): CDC case count stays below 2,200 through July 31, 2026, at 8.4% implied probability.

The CDC case count misses 2,200 when weekly new case totals drop sharply enough to stall the cumulative trajectory before month-end. That would require a dramatic, near-immediate deceleration in transmission. Outbreak clusters in undervaccinated communities have driven most of this year’s count, and those communities have not shown signs of rapid containment.

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Momentum and Market Signals

The momentum composite is strongly bullish. The YES price moved up 9.8% in 24 hours with a trend score of 27.77. That spike aligns with new CDC case count data published this week showing the cumulative 2026 total closing in on the 2,200 mark. The 1-hour change is flat at 0.0%, suggesting the market has absorbed the news and stabilized near a conviction ceiling.

Total volume is $7,686, with $7,664 arriving in the last 24 hours. Liquidity sits at $13,382. This is a thin market by absolute dollar terms. Volume under $1 million means a single large bet could move the price sharply in either direction. The price action this week, including sharp intraday swings, reflects that sensitivity.

• The YES price rose 9.8% in 24 hours, driven by updated CDC case count data pushing the cumulative total toward 2,200.
• The trend score of 27.77 confirms sustained directional momentum toward YES, not a temporary spike.
• Liquidity of $13,382 is thin. Any new CDC weekly report or outbreak cluster update can move this market meaningfully.
• The 1-hour change of 0.0% signals the market has stabilized after absorbing recent data. Traders are waiting for the next CDC release.
• The related Measles cases in U.S. in 2026 market sits at 100%, confirming the broader outbreak trajectory is already considered certain by traders.

Lines Analysis: What the CDC Data Is Telling Us

Here’s what the measurements are telling us. The U.S. has not seen measles case counts at this level since the 2019 outbreak, which finished the year above 1,200. The 2026 surge is already tracking well above that pace. Outbreak clusters in Texas, Ohio, and several other states with significant undervaccinated populations have driven cumulative case totals to levels not seen in decades. The CDC’s weekly updates have shown consistent weekly additions in the double digits, sometimes triple digits, throughout the spring and early summer.

The path to NO requires the CDC count to freeze below 2,200 through July 31. That would mean essentially zero net new confirmed cases for the rest of the month, which conflicts with every trend line the CDC has published in 2026. Vaccination uptake has not accelerated fast enough to break transmission chains in active outbreak counties. The data doesn’t care about the politics, and right now the data points one direction.

• CDC weekly case updates: any report showing a significant weekly addition will push YES toward its ceiling and confirm the trajectory.
• Outbreak cluster status in Texas and other high-burden states: sustained transmission keeps the count climbing; unexpected rapid containment is the primary NO scenario.
• Vaccination rate data from the CDC’s immunization tracking: a sudden surge in MMR coverage in outbreak counties would be a leading indicator of slowdown.
• Any CDC or HHS policy announcement accelerating outbreak response, such as emergency vaccination campaigns, could slow weekly case additions.

The data favors YES by a wide margin. Total volume of $7,686 is thin, but the 24-hour surge reflects traders responding to real case count movement, not speculation. The market is pricing uncertainty, not science, and right now the uncertainty runs mostly in one direction.

LINES VERDICT

CONFIRMED TRAJECTORY

The CDC case count trajectory for 2026 has been consistent and steep. Without a dramatic, evidence-free reversal in transmission, the 2,200 threshold falls before July 31.

What the market says: At 91.6% implied probability, the market has largely settled this question. Thin liquidity means the price remains sensitive to new CDC data releases before the July 31 deadline.

Key unknown: The next CDC weekly measles case update is the single most important data point. If it shows the cumulative count crossing or approaching 2,200, the YES price moves toward its maximum. A surprise containment figure is the only realistic NO catalyst.

Scientific and Outbreak Context

The 2026 U.S. measles outbreak has been driven by declining MMR vaccination rates in specific communities, a pattern the CDC and WHO have flagged as a growing global risk since 2019. Measles requires roughly 95% population immunity to prevent sustained transmission. Several U.S. counties fell below that threshold in recent years, creating conditions for exactly this kind of outbreak. The 2,200 case threshold in this market represents a level not seen in the U.S. in more than 25 years. The related market tracking total 2026 measles cases sits at 100% probability, reflecting trader consensus that the full-year count will be historically significant regardless of where it lands on July 31.