Screwworm Fly Returns to U.S. Borders

A deadly insect nightmare is returning to the U.S. — the screwworm fly, whose larvae feast on living flesh, has reappeared after nearly 60 years, first spotted in Mexico in late 2024. This invasive pest, once eradicated from the U.S. in 1966, now threatens the $113 billion cattle industry, especially cattle with open wounds from routine handling. Climate change is fueling its northward march, with warmer winters creating ideal breeding grounds. Texas has already sealed off Zavala County, while USDA scientists are deploying millions of sterile male flies to disrupt reproduction. Border closures and livestock inspections are underway as officials race to contain the outbreak before it reaches U.S. soil — and before it strikes the beef industry again. Support the show:Get a discount at https://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/a04fe39b3485b9bb