USDA APHIS confirmed the first New World screwworm detections in U.S. livestock since the 1960s on June 3, 2026, in Zavala County, Texas, with subsequent cases rising to 44 in Texas and one in a New Mexico dog by August 10. No confirmed livestock cases have appeared outside Texas, consistent with aggressive containment via 20-km infested zones, animal movement quarantines, enhanced surveillance including drone and trail-camera monitoring, and weekly releases of tens of millions of sterile flies from facilities in Texas and Mexico. The outbreak stems from northward spread through Central America and Mexico since 2023, with official case counts and wild-fly trap data updated daily on the APHIS dashboard serving as the primary resolution inputs. Continued border surveillance and any new model runs or field reports through fall 2026 represent key near-term variables for traders assessing further geographic expansion.
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
57%

December 31
63%
$5,024 Vol.

October 31
57%

December 31
63%
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 detections in U.S. livestock since the 1960s on June 3, 2026, in Zavala County, Texas, with subsequent cases rising to 44 in Texas and one in a New Mexico dog by August 10. No confirmed livestock cases have appeared outside Texas, consistent with aggressive containment via 20-km infested zones, animal movement quarantines, enhanced surveillance including drone and trail-camera monitoring, and weekly releases of tens of millions of sterile flies from facilities in Texas and Mexico. The outbreak stems from northward spread through Central America and Mexico since 2023, with official case counts and wild-fly trap data updated daily on the APHIS dashboard serving as the primary resolution inputs. Continued border surveillance and any new model runs or field reports through fall 2026 represent key near-term variables for traders assessing further geographic expansion.
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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