USDA confirms second Texas calf with screwworm (opens in new tab)

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service confirmed a second New World screwworm infestation on June 5, this one in a one-month-old calf in Zavala County, Texas. The case was about 5.6 miles, or 9 kilometers, from the first recent U.S. detection in the same county. The first case, confirmed June 3 in a three-week-old calf, was found near La Pryor, about 30 miles, or 50 kilometers, northeast of the U.S.-Mexico border. New World screwworm flies lay eggs in ...