Story perspectives

USDA Deploys 8 M Sterile Flies, Quarantines Texas Calf

6/5/2026

Center

USDA Releases Flies

The USDA has released eight million sterile screwworm flies and opened two dispersal facilities in Mexico and Texas.
Brooke Rollins, USDA Secretary, confirmed screwworm case, since 1966, in calf in La Pryor, Texas, with no other detections.
The USDA set a 12-mile (20-km) quarantine around the calf and barred warm-blooded animal movement.
Sterile-fly production is about 100 million weekly, short of the 600 million target, risking $1.8 billion in damages.

Right

USDA Quarantines Texas

Orange signs now line every major road out of La Pryor, directing livestock drivers to sheriff-staffed checkpoints.
USDA established a 12-mile (20-km) quarantine around the infected calf in La Pryor, Texas, and barred movement of warm-blooded animals.
Feeder cattle futures dropped then climbed over 3% as traders assessed outbreak risk.
USDA released sterile flies over zone while a facility slated late 2027 remains under construction.

Blindspot

Center coverage emphasized the estimate that an outbreak could cause up to $1.8 billion in damages to Texas’ economy and lift beef prices nationwide, which Right coverage did not include.
Center coverage noted the release of eight million sterile flies and the opening of two dispersal facilities in Mexico and Texas, details absent from Right coverage.

History

Historical Context

The sterile-insect technique, proposed by Edward F. Knipling and adopted by the USDA in 1958, eliminated screwworm from the southern United States by 1966 after releasing billions of sterile flies—over 94 billion between 1962 and 1975. A new infestation confirmed in June 2026 in Zavala County, Texas, revives those historic control efforts for livestock nationally.

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USDA Releases Flies

The USDA has released eight million sterile screwworm flies and opened two dispersal facilities in Mexico and Texas.
Brooke Rollins, USDA Secretary, confirmed screwworm case, since 1966, in calf in La Pryor, Texas, with no other detections.
The USDA set a 12-mile (20-km) quarantine around the calf and barred warm-blooded animal movement.
Sterile-fly production is about 100 million weekly, short of the 600 million target, risking $1.8 billion in damages.

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