Prediction market odds on US measles cases
Measles outbreaks have become a prediction market topic amid declining vaccination rates and public health debates. With nearly $8M in trading volume, markets on Polymarket and Kalshi offer contracts on case count thresholds — will the US see 1,000, 5,000, or 10,000 measles cases in 2026? These markets provide a real-time probability assessment informed by epidemiological data, vaccination trends, and outbreak dynamics.
Prediction markets offer contracts on specific case count thresholds. A "major outbreak" is typically defined as exceeding historical norms (the US saw under 200 cases annually pre-2024). Check the live markets below for probabilities at each threshold.
Declining vaccination rates in certain communities have reduced herd immunity, allowing measles — one of the most contagious diseases — to spread in pockets of unvaccinated populations. International travel and vaccine hesitancy are key contributing factors.
Prediction markets can provide early warning signals by aggregating information from people tracking outbreaks, vaccination data, and epidemiological trends. They complement official CDC tracking with real-time probability estimates.
