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FDA authorizes product for NWS prevention

WLJ
Aug. 14, 2026 1 minute read
FDA authorizes product for NWS prevention

The Food and Drug Administration (FDA) has issued an Emergency Use Authorization for a topical wound spray for the prevention of New World screwworm infestations in sheep, cattle, goats, swine, camelids and several captured wildlife species.

CLiK Extra (dicyclanil topical suspension) is sponsored by Elanco and is available over the counter for topical use on or around wounds. The spray does not kill NWS larvae, but acts as an insect growth regulator that disrupts larvae development and halts their lifecycle before they can cause tissue damage.

Wounds that are already infested should be discussed with a veterinarian for treatment options.

“Authorizing this product for captive and captured wildlife species, including bighorn sheep, Sonoran pronghorn, American bison, and cervids like deer and elk, is about protecting these animals and helping ensure they do not contribute to the spread of NWS in the United State,” said Timothy Schell, Ph.D., director of the FDA’s Center for Veterinary Medicine.

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