FDA grants emergency use authorization for CLiK Extra wound spray to prevent New World screwworm in livestock and wildlife

The U.S. Food and Drug Administration has issued an Emergency Use Authorization for CLiK Extra, a dicyclanil topical suspension designed to be applied around wounds. The authorization allows the product to be used to stop infestations of New World screwworm, a parasitic fly that can cause severe myiasis.

The EUA covers a broad range of animals, including sheep, cattle, goats, swine, camelids such as llamas and alpacas, as well as captive and captured wildlife like deer, elk, American bison, bighorn sheep, and Sonoran pronghorn.

FDA officials said the decision is based on a review of scientific evidence indicating that the spray is likely effective for preventing the pest and that its benefits outweigh any known risks. The agency highlighted the importance of protecting both farm animals and wildlife from the damaging effects of screwworm.

Acting FDA Commissioner Kyle Diamantas noted that the authorization provides a new tool for farmers, ranchers, veterinarians, and wildlife managers, reinforcing the agency’s commitment to combatting this threatening pest.