This Fly Could Cost the U.S. Cattle Industry Millions — Again New World Screwworm (NWS) remains a looming threat for U.S. livestock producers as it continues its northward expansion. Positive cases of the pest — which had previously been eradicated in most of Ce | Published on: Jun 19, 2025 New World Screwworm (NWS) remains a looming threat for U.S. livestock producers as it continues its northward expansion. Positive cases of the pest — which had previously been eradicated in most of Central America — have been reported in Oaxaca and Veracruz, Mexico, around 700 miles from the U.S. border.If allowed to spread to the U.S., NWS could cost millions in production losses, according to the Animal and Plant Health Inspection Service (APHIS). “The last time this devastating pest invaded America, it took 30 years for our cattle industry to recover,” said Secretary of Agriculture Brooke Rollins in an X post. “This cannot happen again.” -National Institute for Animal Agriculture Email this Story to a Friend Please provide your name * Please provide an email Please provide your friend's name
