Screwworms are back. For ranchers, it’s just the latest hit.
In March 2025, as the Trump administration effectively dissolved the U.S. Agency for International Development, a stop-work order shuttered a program dedicated to monitoring and containing of the New World screwworm — flesh-eating parasitic flies that can kill livestock — in Central America. A little more than a year later, the screwworm is back, and … Read more