by Jon Fleetwood, Jon Fleetwood: Government-backed releases occurred in Sonora, Mexico, which borders the Arizona county where the state’s first infestation was discovered. The U.S. Department of Agriculture (USDA) confirmed Arizona’s first New World screwworm infestation on October 28, 2026. The infected animal was a dog in Cochise County, Arizona, which borders Sonora, Mexico. Weeks […]