The prediction markets are not optimistic. Kalshi currently prices the prospect of a single calendar year passing without a recorded polio case — anywhere on Earth, before 2030 — at a mere six percent. That figure, drawn from $25,000 in active trading, suggests the world is far more likely to carry this ancient affliction across the threshold of the next decade than to vanquish it in time.

The stakes require no embellishment. Polio has paralyzed children since antiquity, and the global eradication campaign, launched formally in 1988, has reduced cases by more than 99 percent. Yet that final fraction proves devilishly stubborn. Wild poliovirus persists in Pakistan and Afghanistan, complicated by conflict, vaccine hesitancy, and the logistical nightmare of reaching remote communities. Market consensus, in short, reflects not a failure of medicine but a failure of access and politics.

Should vaccination campaigns achieve a breakthrough in those last endemic corridors — or should international funding surge with renewed political will — the odds could shift with surprising speed.