Source: Medscape
The U.S. Food and Drug Administration (FDA) has authorized the emergency use of generic over-the-counter nitenpyram tablets to treat New World screwworm infestations in dogs and cats as part of ongoing efforts to contain the parasite’s spread. The approval follows the confirmation of the first domestic screwworm cases in more than 60 years, involving cattle, a goat, and a dog in Texas and New Mexico.
New World screwworm larvae feed on living tissue after entering animals through open wounds, causing severe damage if left untreated. The FDA said the fast-acting tablets can be used in pets at least four weeks old and weighing two pounds or more, with most larvae expected to be killed within hours of treatment. A second dose is recommended six hours later, although veterinarians may still need to remove remaining larvae and provide wound care.
Federal officials say the approval expands access to affordable treatment options and supports broader efforts to control the parasite and protect animal health.