USDA Reports New Screwworm Cases in Texas, Threatening Cattle Industry
The U.S. Department of Agriculture (USDA) has confirmed two additional cases of the New World screwworm in Texas, highlighting the challenges in controlling this flesh-eating parasite. The screwworm, a fly larva that consumes living tissue, was found in a calf and a dog in La Salle and Andrews counties. This brings the total to four confirmed cases in Texas, following initial detections in two calves in south Texas. The USDA has been actively working to prevent the spread of screwworm since its detection in Mexico in late 2024. Historically, screwworm was a significant issue for cattle ranchers in the U.S. until it was eradicated in the 1960s. The USDA is employing a strategy of breeding sterile male flies to curb the population, a method that has been effective in the past. However, Texas Agriculture Commissioner Sid Miller has criticized the federal response, suggesting that a poison bait could be a quicker solution, despite potential risks to other species.