The U.S. Food and Drug Administration (FDA) has issued two Emergency Use Authorizations (EUAs) for veterinary drugs to treat New World screwworm (NWS) infestations. The first EUA is for NexGard (afoxolaner) chewable tablets for dogs, and the second is for NexGard COMBO (esafoxolaner, eprinomectin, and praziquantel topical solution) for cats. These authorizations address the emergence of NWS, a parasitic fly larva that can infest warm-blooded animals.

While these are EUAs, they represent a significant step in providing treatment options for affected animals. Veterinarians and pet owners should be aware of these new treatment options. The FDA's action indicates a heightened concern regarding NWS outbreaks. No specific compliance deadlines or penalties are mentioned, as this is an authorization for treatment rather than a new regulation for manufacturers or distributors, though it implies a need for vigilance regarding animal health surveillance and treatment protocols.