FDA Authorizes Emergency Drug To Help Treat New World Screwworm in Dogs
Summary
The U.S. Food and Drug Administration (FDA) authorized an emergency use of a chewable drug called Trio to treat New World screwworm infestations in dogs and puppies. This parasite feeds on living tissue and can cause serious wounds and infections, so dog owners in affected areas should watch for symptoms and seek veterinary care quickly.Key Facts
- The FDA gave emergency use approval on August 13 for Trio, a monthly chewable medication by Zoetis, to treat New World screwworm in dogs.
- The New World screwworm is a parasitic fly whose larvae eat living tissue, causing serious damage to warm-blooded animals.
- Female flies lay eggs around wounds, and larvae hatch within 24 hours before burrowing and feeding on tissue.
- Symptoms include wounds that rapidly enlarge or look like they are being eaten away, swelling, redness, bad smells, and visible maggots.
- Serious signs include lethargy, fever, loss of appetite, weakness, and pale gums.
- Trio contains three active ingredients, with sarolaner working against the parasite; it was already FDA-approved for other parasites in dogs.
- Treatment often involves multiple steps, including removing larvae, managing wounds, and supportive care, beyond just giving the drug.
- Owners should check dogs regularly and get veterinary care immediately if they see signs of infestation, especially in or near affected geographic areas.
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