Officials Warn About Infectious Screwworms Invading Texas

The Texas Department of Parks and Wildlife (TPWD) is urging residents in South Texas to stay vigilant after the New World Screwworm was recently identified in Mexico, as reported by KXAN. This parasitic pest, eradicated from the United States in 1966, remains prevalent in parts of the Caribbean and South America.

What Is the New World Screwworm?

The New World Screwworm is the larval stage of a fly species that poses a significant threat to animals and humans. According to TPWD, the female screwworm fly lays eggs in open wounds or live tissue, such as the nostrils, eyes, or mouth. Once the eggs hatch, the larvae burrow into flesh using sharp mouth hooks, leading to painful parasitic infections.

Female screwworm flies are particularly attracted to the scent of wounds on warm-blooded animals and can lay up to 300 eggs at a time.

Who Is at Risk?

While livestock are the primary victims of screwworm infestations, the parasites can also infect birds, pets, and even humans. The Centers for Disease Control and Prevention (CDC) warns that screwworm infections can cause severe tissue damage and potentially lead to bacterial superinfections if left untreated.

Recent Developments in Mexico

Mexican authorities notified the U.S. Department of Agriculture in November of a confirmed case of New World Screwworm in a cow. This marks the first detection of the parasite in Central America in several years, raising concerns about its potential spread.

Prevention Tips

TPWD advises taking precautions to avoid screwworm infections, particularly when traveling to regions where the parasite is present. Preventive measures include:

• Cleaning and covering wounds promptly.
• Applying insect repellents to deter flies.
• Monitoring animals for signs of infection.

The CDC and TPWD emphasize the importance of early detection and proper wound care to reduce the risk of screwworm infestation. If you suspect an infection, seek veterinary or medical attention immediately.

For more information, visit the Texas Department of Parks and Wildlife website.