From the prediction market wires comes a sobering communiqué: the world is, by most reckoning, unlikely to see a single calendar year wholly free of polio before the decade closes. Kalshi, the futures exchange, places the odds at a meager 6%, a figure that ought to sober even the most ardent optimist in the public health corps. The markets are not predicting triumph — they are predicting continued siege.

Polio, that crippling affliction which once terrorized schoolyards from Chicago to Calcutta, was thought by many to be within arm's reach of total extinction. Global vaccination campaigns have reduced cases by more than 99% since 1988, yet stubborn reservoirs persist — chiefly in Pakistan and Afghanistan — where conflict, mistrust of vaccinators, and logistical tribulation conspire to keep the virus alive. Market consensus, with its characteristic cold arithmetic, suggests these obstacles are formidable indeed. Should conflict ease and vaccination access surge, the odds could shift with remarkable swiftness.