July 27, 2026 10:43 am, EDT (Brandon Bell/Getty Images North America/Bloomberg) key takeaways: The USDA will begin a phased reopening of Mexican cattle imports in Douglas, Ariz., on Aug. 24, following a one-year ban linked to New World screwworm. The reopening could ease record beef prices and historic U.S. cattle shortages as Mexico previously supplied
Keith Lusher 07.16.26 New World screwworm has returned to the United States, prompting an aggressive response from federal and state officials as infections are confirmed in Texas and New Mexico. Parasitic flies are a legitimate concern for livestock farmers, veterinarians, and wildlife managers. Its larvae feed on the living tissues of warm-blooded animals and, if
New World screwworm flies at a sterile screwworm fly production facility in Metapa, Mexico. (Mauricio Palos/Bloomberg) July 7, 2026 5:00 pm, EDT key takeaways: New World screwworms have been detected in 32 animals in Texas since the beginning of last month, the first US livestock case in nearly five decades. Officials and experts say the
Dyed sterile fly pupae are used to combat the spread of New World screwworm at the Chaparrosa Ranch in La Pryor, Texas. (Eric Vrin/Bloomberg) June 25, 2026 2:36 pm, EDT key takeaways: Four New World screwworm cases were confirmed at a property in Terrell County, Texas, the largest U.S. cluster reported since investigations began this
Cattle were grazing on a farm in Quemado, Texas, on June 2. (Brandon Bell/Getty Images North America/Bloomberg) June 15, 2026 1:44 pm, EDT key takeaways: New World screwworm infection in Texas has expanded beyond the initial area to at least a dozen cases, including in cattle and sheep, prompting stepped-up containment efforts. The parasite threatens