New World Screwworm confirmed in US

USDA Confirms Presence of New World Screwworm in the United States

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. NWS larvae (maggots) burrow into the flesh of living animals, causing serious damage to livestock and economic losses. Read full press release here.