{"source":"kalshi","id":"KXPOLIO-26","ticker":"KXPOLIO-26","slug":"KXPOLIO-26","title":"Will there be a case of polio in the USA this year?","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-03-25T14:00:00Z","end_date":"2027-01-31T15:00:00Z","closed_time":null,"volume":9859.47,"volume_24hr":0.0,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":18.897804260253906,"liquidity":null,"open_interest":5038.44,"categories":["Health"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"In 2026","top_outcome_probability":0.15,"top_outcome_prob_24h_change":0.0,"top_outcome_volume_24h_change":-6.29,"updated_at":"2026-07-25T18:12:17.073996Z","fetched_at":"2026-07-25T18:12:17.073996Z","added_at":null,"url":"https://kalshi.com/markets/kxpolio/will-there-be-a-case-of-polio-in-the-usa-this-year/kxpolio-26","chart_24h":null,"markets":[{"source":"kalshi","id":"KXPOLIO-26-0","event_id":"KXPOLIO-26","slug":"KXPOLIO-26-0","question":"Will there be a case of polio in the USA this year?","group_item_title":"In 2026","description":"If there are above 0 cases of polio in the United States in 2026, then the market resolves to Yes.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.15,0.85],"probability":0.15,"spread":0.04000000000000001,"active":true,"closed":false,"start_date":"2026-03-25T14:00:00Z","end_date":"2027-01-31T15:00:00Z","closed_time":"2027-01-31T15:00:00Z","volume":9859.47,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":-6.29,"normalized_vol_24hr":null,"normalized_volume":22.009519577026367,"liquidity":null,"categories":["Health"],"countries":["United States"],"updated_at":"2026-07-25T18:13:54.554366Z","fetched_at":"2026-07-25T18:12:17.231687Z","added_at":null,"url":"https://kalshi.com/markets/kxpolio/will-there-be-a-case-of-polio-in-the-usa-this-year/kxpolio-26","event_title":"Will there be a case of polio in the USA this year?","chart_24h":[0.15,0.15]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXPOLIO-26","as_of":"2026-07-26T01:00:03.230308Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Will there be a case of polio in the USA this year?\" — top market at 15% probability across 1 outcome","source_url":null}}