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Elanco's Negasunt™ Powder (Coumaphos, Propoxur, Sulfanilamide Topical Powder) and Tanidil™ (Coumaphos, Propoxur) Receive Emergency Authorization for Use Against New World Screwworm in Livestock

$ELANPress releaseApr 27, 2026, 6:24 PM ETRead the release

Elanco secured Emergency Use Authorization from the FDA for Negasunt Powder and a Section 18 Emergency Exemption from the EPA for Tanidil to prevent and treat New World screwworm in livestock. The authorizations were granted following confirmed detections of the pest within 62 miles of the U.S. border, ensuring veterinarians and producers have immediate access to treatments through the National Veterinary Stockpile.

Key figures

Detection distance miles
62
Tanidil exemption expires
April 27, 2029

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