Contact: aphispress@usda.gov Animal Health Officials Working Quickly to Protect U.S. Livestock and Wildlife WASHINGTON, DC, JUNE 03, 2026 – The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) confirmed the detection of a New World screwworm (NWS) in a bovine in Zavala County, Texas. NWS is a serious pest that affects livestock, pets, wildlife, and less commonly, people and birds.