USDA Responds Swiftly to New World Screwworm Detection in Mexico A new case of New World Screwworm (NWS) has been confirmed in Mexico, roughly 170 miles from the U.S.-Mexico border, according to an official announcement from U.S. Secretary of Agriculture Brooke Rollins. “In a post on X, US Secretary of Agriculture Brooke Rollins announced that another case of New World …