Waco Responds as New Screwworm Cases Emerge Across Texas

Since June 3, over two dozen cases of New World Screwworm have been identified in Texas, predominantly affecting cattle and sheep. This discovery comes decades after the USDA declared the fly eradicated from the United States. Following the initial sighting on a calf in Zavala County, state and federal authorities have implemented quarantines and released millions of sterile flies as a control measure. The Waco-based Texas Farm Bureau is actively involved in informing farmers, ranchers, and the public about the re-emergence of the screwworm. Communications Director Gary Joiner emphasized the importance of preparedness during a recent interview. He noted that while panic is unwarranted, proactive steps are critical, especially given that many Texans today have no firsthand experience with this pest. Joiner highlighted that direct spread by the fly itself is limited, as the insects typically travel only a few miles in their short lifespan. However, human activities, such as transporting animals, can rapidly move the flies over much greater distances. He advises livestock owners to closely monitor their animals daily for any signs of distress or open wounds, as even a small tick bite can be an entry point for screwworm eggs. Early detection and reporting are crucial for containment. Joiner explained that confirmed individual infestations have been successfully managed when reported promptly to veterinarians and animal health officials. Owners should look for behavioral changes, signs of stress, swelling, or a loss of appetite. Newborn animals, with their vulnerable umbilical cords, are particularly susceptible to infestation.