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

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

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

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

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 ...

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

The latest screwworm cases in Mexico bring more discussion about legal—and illegal—Latin American cattle trade.

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

A recent surge in New World screwworm (NWS) infestations near Mexico’s northern border is causing concern in Texas.

It’s just plain cowboy logic — when you’re seeing this many cases this fast, it tells you there may be established screwworm ...

Yesterday the Centers for Disease Control and Prevention (CDC) issued a Health Alert Network (HAN) advisory on recent animal cases of New World screwworm (NWS) in the Mexican state of Tamaulipas, ...

More cases of New World screwworm have been found in a Mexican border state.