USDA APHIS confirmed the first New World screwworm (Cochliomyia hominivorax) infestation in a Zavala County, Texas calf on June 3, 2026, linked to northward spread from Central America and Mexico since 2023. By late September 2026, officials reported roughly 50 total U.S. animal cases, with detections expanding across multiple Texas counties and two in New Mexico, including a recent horse case in Grant County. Livestock species affected include cattle, sheep, goats, and horses, while sterile-insect releases exceeding one billion flies, quarantines, and enhanced border surveillance have aimed to limit dispersal. Trader sentiment reflects ongoing uncertainty around further northward movement versus successful containment, with market-implied odds influenced by weekly USDA dashboard updates, fly-trap results, and any new livestock confirmations outside Texas before resolution dates.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedConfirmed US Screwworm case in Livestock beyond Texas by...

October 31
85%

December 31
78%
$5,662 Vol.

October 31
85%

December 31
78%
Any laboratory-confirmed screwworm infection identified within a U.S. state other than Texas will qualify, regardless of where exposure or symptom onset occurred.
The primary resolution source for this market will be official government information (e.g., the CDC or USDA); however, an overwhelming consensus of credible reporting will also suffice.
Market Opened: Jun 9, 2026, 10:17 PM ET
Resolver
0x65070BE91...Any laboratory-confirmed screwworm infection identified within a U.S. state other than Texas will qualify, regardless of where exposure or symptom onset occurred.
The primary resolution source for this market will be official government information (e.g., the CDC or USDA); however, an overwhelming consensus of credible reporting will also suffice.
Resolver
0x65070BE91...USDA APHIS confirmed the first New World screwworm (Cochliomyia hominivorax) infestation in a Zavala County, Texas calf on June 3, 2026, linked to northward spread from Central America and Mexico since 2023. By late September 2026, officials reported roughly 50 total U.S. animal cases, with detections expanding across multiple Texas counties and two in New Mexico, including a recent horse case in Grant County. Livestock species affected include cattle, sheep, goats, and horses, while sterile-insect releases exceeding one billion flies, quarantines, and enhanced border surveillance have aimed to limit dispersal. Trader sentiment reflects ongoing uncertainty around further northward movement versus successful containment, with market-implied odds influenced by weekly USDA dashboard updates, fly-trap results, and any new livestock confirmations outside Texas before resolution dates.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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