FDA OKs Drugs to Fight Screwworm Maggots Eating Pets Alive
Published Date: 10/15/2026
Notice
Summary
The FDA just gave emergency approval to four new animal drugs to fight the nasty New World screwworm, a bug that causes painful infections in livestock and pets like sheep, cattle, dogs, and cats. These drugs can prevent or treat infestations, helping farmers and pet owners protect their animals quickly. The approvals started rolling out between August and September 2026, making it easier and faster to keep animals safe without delay.
Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
CLiK Extra emergency use for livestock
If you own sheep, cattle, goats, swine, or camelids (or manage certain captive or captured wildlife like cervids, American bison, bighorn sheep, or Sonoran pronghorn), FDA authorized emergency use of CLiK Extra (dicyclanil topical suspension) wound spray for prevention of New World screwworm infestations. This EUA became effective August 7, 2026 and is subject to the conditions in the Authorization.
Bimectin (ivermectin) for cattle prevention
If you own or manage cattle, FDA authorized emergency use of Bimectin (ivermectin) injection for prevention of New World screwworm infestations in cattle. This EUA became effective August 27, 2026 and is subject to the conditions in the Authorization.
Simparica TRIO for treating dogs
If you own dogs or puppies, FDA authorized emergency use of Simparica TRIO (sarolaner, moxidectin, and pyrantel chewable tablets) for treatment of New World screwworm infestations. This EUA became effective August 13, 2026 and is subject to the conditions in the Authorization.
CAPSTAR authorized for small pets
If you own dogs, puppies, cats, or kittens weighing 2 pounds or more and at least 4 weeks old, FDA authorized emergency use of CAPSTAR (nitenpyram) tablets for treatment and prevention of New World screwworm infestations. This EUA became effective September 3, 2026 and is subject to the conditions in the Authorization.
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