The USDA has announced a new sterile fly breeding site in southern Texas to protect American cattle from the deadly New World ...

Alfredo Chavez, a cattle rancher and livestock technician, shows New World screwworm larvae removed from a cow at his ranch in Cintalapa, Chiapas, Mexico, Wednesday, July 23, 2025, amid an infestation ...

The parasitic fly that attacks warm-blooded animals was eliminated from the United States in the 1960s, but it’s creeping toward the Texas-Mexico border.

Alfredo Chavez, cattle rancher and livestock technician, shows New World screwworm larvae removed from a cow at his ranch in Cintalapa, Chiapas, Mexico, Wednesday, July 23, 2025, amid an ...

Berdegué said the number of flies dispersed in Mexico has reached 100 million a week. Screwworm flies lay their eggs on live animals, and the larvae burrow into the flesh of the host.

On Friday, Texas Governor Greg Abbott and U.S. Secretary of Agriculture Brooke Rollins publicly addressed “plans to fight ...

NWS is a devastating pest, the USDA said. When NWS fly larvae (maggots) burrow into the flesh of a living animal, they cause ...

U.S. Customs and Border Protection El Paso sector is warning about the threat of the New World Screwworm to the regional ...