New World Screwworm Threatens Animals in Texas

The Texas Parks and Wildlife Department (TPWD) has issued a warning to hunters and outdoor enthusiasts in South Texas regarding the New World Screwworm (NWS), a dangerous parasite that can infest livestock, pets, wildlife, and even humans. The warning comes after the parasite was recently discovered in a cow in Chiapas, Mexico, located just south of the Texas border.

NWS is a serious threat to animals, causing significant damage and often leading to death. The parasite's larvae, known as maggots, burrow into the flesh of living animals through open wounds, nostrils, eyes, and mouths. This infestation, called New World screwworm myiasis, can cause severe pain and suffering, ultimately leading to death if left untreated.

The scientific name for the parasite, Cochliomyia hominivorax, translates to "maneater," highlighting the severity of its impact. While NWS was once prevalent in the United States, causing significant economic losses, it was successfully eradicated in 1966 through the use of sterile insect technique. However, there remains a constant risk of reintroduction from infested areas in South America.

To prevent the spread of NWS, TPWD advises individuals to take precautions when spending time outdoors, especially in affected areas. These precautions include cleaning and covering all wounds, applying insect repellent to clothing, and monitoring animals for signs of infestation, such as irritated behavior, loss of appetite, and the presence of maggots in wounds.

By following these guidelines and remaining vigilant, individuals can help protect themselves and their animals from the dangers of NWS.