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How to protect your pets from the New World screwworm fly
PBS • • nation
Key Points:
- Two cases of New World screwworm infestations in dogs are among over 30 confirmed instances in Texas and New Mexico, raising concerns among veterinarians and humane societies about pet safety.
- The parasite, whose larvae feed on live flesh, reemerged in U.S. cattle in June after being eradicated for over 50 years, and can infest any mammal, including pets and occasionally humans.
- Pet owners in affected regions should regularly check animals for wounds, maggots, foul odors, or signs of restlessness, and seek veterinary care immediately if infestation is suspected, as untreated cases can be fatal.
- Flea and tick medications are recommended to prevent infestations because they kill larvae when ingested, and infected animals can recover with timely veterinary treatment including antibiotics.
- Efforts to eradicate the screwworm fly involve releasing sterile male flies to disrupt reproduction, supported by USDA investments in breeding facilities in Mexico and Texas to control and eliminate the pest.
