A parasitic threat has emerged in Texas with the discovery of New World screwworm in an elk in Pecos County. This flesh-eating parasite poses a risk to cattle and prompts officials to seek help from hunters and ranchers to curb its spread.
The U.S. Department of Agriculture reported the finding following a hunter’s observation. Additional surveillance is underway by the USDA and the Texas Parks and Wildlife Department (TPWD). They are assessing wildlife conditions while the Texas Animal Health Commission considers changes to the current infested zone.
“Hunters and outdoor observers can significantly contribute to surveillance efforts,” the USDA stated.
Texas authorities urge vigilance during hunting seasons. They ask hunters to identify symptoms of the parasite in wildlife, like visible maggots, expanding wounds, foul-smelling injuries, or distressed animals. Special attention should be given to infections around the nose, mouth, eyes, and genital regions.
So far, New World screwworm has been confirmed in cattle in Texas and New Mexico. The parasite affects animal health but does not impact food safety.
Decades ago, New World screwworm was eradicated from the U.S., but it has crept north from Central America and Mexico. Last year, the U.S. suspended livestock imports from Mexico to prevent its return, impacting cattle supply and beef prices. Import resumptions began in August.
Texas officials work closely with local hunters and landowners. They quickly pinpointed the parasite in an elk, marking the first U.S. wildlife case in this outbreak. New Mexico has also set up an infested zone around a recently affected beef cow.
A National Cattlemen’s Beef Association statement disclosed collaboration with state entities to combat screwworm. Federal efforts include improved surveillance, cattle treatment, and sterile-fly release programs.