The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century, with an infestation from its flesh-eating larvae confirmed in south Texas.
The infestation was discovered in a single 3-week-old calf in La Pryor, Texas, about 100 miles (161 kilometers) southwest of San Antonio and 50 miles (80 kilometers) from the U.S.-Mexico border. Federal and state officials had been working to keep the parasite from reaching Texas, home to $17 billion worth of the nation's cattle, making it the industry's No. 1 state.
The U.S. Department of Agriculture on Friday announced a second confirmed case found in a one-month-old calf in Zavala County, Texas, about 5.6 miles (9 kilometers) from the first case.
