The southern border was closed to imports of the animals after screwworm, eradicated in the U.S. for decades, had been moving northward in Mexico.

U.S. Secretary of Agriculture Brooke L. Rollins announced risk-based port re-openings for cattle, bison, and equines from ...

Following a New World screwworm assessment by USDA staff in Mexico and ongoing conversations between Secretary Rollins and ...

Not enough sterile flies are being dropped in Mexico to reverse New World screwworm’s northward spread, Mexico’s top ...

In the 1940s and 50s, cowboys carried a stick to treat cattle infested with screwworms. The stick was used to scrape the ...

Cattle react to fly activity by movement into shade, restlessness, skin rippling, or simply stamping and tail switching ...

A parasitic fly that devastated Texas livestock in the 1960s is spreading north through Central America and potentially toward the state’s $15 billion cattle industry, prompting state and fed… ...

Abbott ordered two Texas agencies to begin working together and with residents and business leaders to stop the spread of the ...