US ag groups confident in USDA’s capability to respond to NWS

American Farm Bureau Federation’s president said re-emergence of New World screwworm will have an immediate impact, but House and Senate ag committee leaders say it is not a reason to panic.

June 4, 2026

Jonathan Weiss | BigStock.com

U.S. agricultural groups are reacting to the first case of New World screwworm (NWS) in the country in six decades.

The U.S. Department of Agriculture (USDA) confirmed the detection of NWS in a three-week old calf in Zavala County, Texas, on June 3. 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.

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