The New World screwworm flies lay their eggs in wounds, noses, ears, eyes or mouths. Their eggs develop into parasitic larvae ...

The New World screwworm is getting dangerously close to the U.S., public health officials warn. If left untreated, a ...

USDA denies New World screwworm in US after rumors trigger cattle market selloff Friday with cash trade holding steady.

On January 21, 2026, U.S. Secretary of Agriculture Brooke Rollins announced the launch of the New World Screwworm (NWS) Grand ...

Secretary of Agriculture Brooke Rollins announces launch of New World Screwworm Grand Challenge to stop northward spread.

U.S. Secretary of Agriculture Brooke L. Rollins announced the launch of the New World Screwworm (NWS) Grand Challenge. This ...

Texas Agriculture Commissioner Sid Miller says new active cases of New World screwworm have been reported by Mexican ...

The new world screwworm once caused widespread devastation to livestock in the United States, prompting a decades-long ...

Texas ranchers and those in the cattle industry are on high alert as more cases of New World screwworm infestations are reported close to the Texas-Mexico border. The parasitic blowflies attack and ...

A nationwide health advisory has been issued as a flesh-eating fly spreads near the Texas-Mexico border. No U.S. cases have ...

As part of the Grand Challenge, USDA’s Animal and Plant Health Inspection Service (APHIS) will distribute up to $100 million to innovative projects that enhance sterile NWS fly production, strengthen ...

In Sabinas Hidalgo, Mexico, new cases of New World screwworm , or NWS, have been confirmed by Mexico’s National Service of ...