Screwworm Spreads to US Wildlife in Texas, USDA Says

Screwworm case confirmed in Otero County

Screwworm case confirmed in Otero County

New World screwworm detected in Otero County beef cow

The case is New Mexico’s fifth since the parasitic fly made its return to the United States this summer.

Screwworm spreads to US wildlife in Texas, USDA says

The New World screwworm is a parasitic fly that can enter animals through open wounds and feed on living tissue.

First case of New World screwworm in U.S. wildlife confirmed in Texas elk, USDA says

The New World screwworm was detected in an elk that was discovered on a game ranch in Pecos County, Texas.

New World screwworm detected in Otero County and Texas

OTERO COUNTY, N.M. (KVIA) -- Two new cases of New World screwworm have been confirmed in Otero County, New Mexico, and Texas, according to the U.S. Department of Agriculture. NWS is a parasitic fly whose maggots burrow into the open wounds of warm-blooded animals, including livestock. They use mouth hooks to "screw" into the flesh.