A Flesh-Eating Parasite Is Threatening Texas Pets and Livestock. Here’s What You Need to Know

A parasitic threat that most Americans had not worried about in decades has returned to Texas, and if you share your life with animals, now is the time to get informed. New World screwworm, a fly whose larvae burrow into the living tissue of warm-blooded hosts, has been confirmed in several U.S. locations, with cases appearing as close as Gillespie County. The good news is that knowledge and calm vigilance are genuinely powerful tools here.

The screwworm fly targets open wounds or body openings, laying eggs that hatch within a day and produce larvae that feed deeper into the host tissue. Without intervention within roughly one to two weeks, an infestation can become life-threatening. Caught early, though, According to Texas A&M AgriLife Research & Extension Center, affected animals typically recover well. That early window is everything.

Experts recommend checking your pets and livestock every two to three days. You are looking for wounds that smell unusually foul, visible maggots or eggs, lesions around the ears or navel, or behavioral changes like excessive biting at a wound, restlessness, or sudden lethargy. Branding or dehorning sites on livestock deserve extra attention. Treat any wound you discover promptly, but resist the urge to panic over every scrape before the telltale signs appear.

If something does look genuinely suspicious, contact the Texas Animal Health Commission and your veterinarian right away. Critically, do not transport a potentially infested animal into town. Moving an affected animal risks spreading the parasite further, which is the last outcome anyone wants. Vets and animal health officials can advise you remotely on next steps, and the available treatment options have expanded considerably over the past year.

For people with indoor pets who occasionally venture outside, the risk remains low. Specialists say there is no need to confine your companions indoors or dramatically change daily routines. The situation calls for steady attention, not fear. Stay observant, keep wounds clean, and lean on your local agricultural and veterinary resources. That is how communities protect the animals they love.

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