A flesh-eating parasite known as the New World screwworm has been identified in an elk in western Texas, prompting authorities to seek assistance from hunters and ranchers to curb its spread.
According to the U.S. Department of Agriculture, the parasite was discovered on a game ranch in Pecos County after a hunter reported the finding following an elk hunt.
The USDA, along with the Texas Parks and Wildlife Department, is increasing its wildlife surveillance efforts, and the Texas Animal Health Commission is modifying an existing infested area.
Officials stated that hunters and outdoor enthusiasts, especially those frequenting regions known for infestations, are often the first to notice affected wildlife—which makes their observations crucial for monitoring and responding to the situation.
As the hunting season continues in Texas and surrounding states, hunters are encouraged to keep an eye out for signs of the New World screwworm while they are out observing or processing wildlife.
They have been advised to look for visible maggots in wounds or bodily openings, as well as open or enlarging injuries, unpleasant odors, and animals that seem weak or behave unusually. Signs of infection around sensitive areas like the nose, mouth, or genitals should also prompt immediate reporting, according to the agency.
The Texas Parks and Wildlife Department has urged hunters to inspect any animals they harvest before field dressing or transporting them, also advising them to be aware of signs like lethargy, a change in appetite, unusual head movements, or isolation from the rest of the herd.
The New World screwworm was eradicated from the U.S. years ago, but it has been moving northward through Central America and Mexico. Last year, to prevent its reintroduction, the U.S. halted imports of livestock from Mexico, which created significant supply strain and contributed to skyrocketing beef prices. The import process started gradually reopening in August.
In June, officials confirmed the presence of the parasite in a Texas calf, and there have been reports of it in other animals, including horses and dogs. The elk found in Texas marks the first confirmed wildlife case in the current outbreak. Authorities noted that the collaboration between local hunters, landowners, and the Texas Parks and Wildlife Department was key to recognizing and confirming this latest detection.
Recently, New Mexico officials reported the screwworm in a beef cow and set up an infested zone around that animal. Animals within this zone are subject to inspection and possible treatment before any movement is permitted.
The screwworm poses risks to animal health and meat production, but the USDA asserts that it does not pose any threats to food safety. The National Cattlemen’s Beef Association has been working with state partners to combat the screwworm issue, encouraging federal efforts that include fly surveillance and treatments for infected livestock. An update from the association is awaited.
