Resurgence of New World Screwworm Threatens U.S. Beef Industry

The New World screwworm, a fly whose larvae feed on warm-blooded animals, has been detected in the United States after a 60-year absence. The U.S. Department of Agriculture confirmed the presence of larvae in a calf in Zavala County, Texas, with additional cases found in the region. The U.S. cattle herd is at its smallest since 1951, partly due to drought, and rising cattle prices are impacting consumers. The USDA has employed a sterilization and release strategy to control the screwworm population, but challenges remain due to insufficient production facilities for sterile flies. Political blame has emerged regarding the outbreak, with various officials pointing fingers at each other for the lack of funding and preparedness. The cattle industry faces uncertainty as ranchers weigh the risks of investing in new calves amidst fluctuating market conditions and potential import policy changes.