Cattle are held in a corral before being exported to the United States through the Jeronimo-Santa Teresa border crossing after Agriculture Secretary Brooke Rollins announced an agreement with Mexico on the management of the New World screwworm at the Chihuahua Regional Livestock Union facility, outside Ciudad Juarez, Mexico, on April 29, 2025. Jose Luis Gonzalez/ReutersA case of the New World screwworm may have been detected in South Texas, possibly becoming the first known case of the flesh-eating parasite in the United States since 2017, the U.S. Department of Agriculture (USDA) announced June 3.The sample was sent to USDA’s national veterinary laboratory in Ames, Iowa, for confirmation.
USDA Detects First Case of New World Screwworm in South Texas
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