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Company offers portfolio of treatment options and expert guidance following first confirmed case in the United States New World screwworm has officially reached the United States, with the first confirmed case in U.S. livestock in Texasi New World screwworm can infest any warm-blooded animals – including livestock and pets – posing a significant threat to animal health, welfare, and producer livelihood Elanco offers a portfolio of options for both livestock and pets that can treat infestations caused by New World screwworm larvae INDIANAPOLIS , June 4, 2026 /PRNewswire/ -- Elanco Animal Health Incorporated (NYSE: ELAN) today reaffirms its commitment to providing veterinarians, livestock producers, and pet owners with resources and treatment options for their animals against the escalating threat posed by New World screwworm (NWS). The fly recently reached the United States, with the first case confirmed in U.S. livestock in Texas.i The emergence of New World screwworm in the U.S. creates a threat for veterinarians, livestock producers and pet owners that has not been seen north of the Florida Keys since the fly was eradicated from the United States more than 50 years ago.ii New World screwworm (Cochliomyia hominivorax) larvae feed on living tissue and can affect a wide range of warm-blooded animals, including livestock, companion animals, wildlife, and even humans.ii "New World screwworm could have a devastating impact on animal health, welfare, and producer livelihoods," said Jeff Simmons, President and CEO, Elanco Animal Health.

Action Prepares Veterinarians and Livestock Producers with Prevention and Treatment Options Prior to Fly Being Detected in the U.S. Federal agencies grant emergency authorizations for New World screwworm in livestock, reinforcing Elanco's leadership in livestock health innovations Actions underscore the commitment of the U.S. Food and Drug Administration, U.S. Environmental Protection Agency, and U.S. Department of Agriculture to act swiftly against emerging animal health threats Early detection and immediate treatment of open wounds on livestock is critical to prevention of New World screwworm myiasis in individual animals and rapid spread of the pest An effective fly and tick control regimen is also essential, helping to avoid small bites on animals that can be an entry point for the screwworm INDIANAPOLIS, April 27, 2026 /PRNewswire/ -- Elanco Animal Health Incorporated (NYSE: ELAN) announced it has received Emergency Use Authorization (EUA) from the U.S. Food and Drug Administration (FDA) for Negasunt Powder (coumaphos, propoxur, sulfanilamide topical powder) and a Section 18 Emergency Exemption from the U.S. Environmental Protection Agency (EPA) in cooperation with the United States Department of Agriculture (USDA) for Tanidil (coumaphos, propoxur) for the prevention and treatment of New World screwworm infestations in a variety of livestock species. With confirmed cases of New World screwworm detected as close as 62 miles south of the U.S.-Mexico borderi, these authorizations ensure veterinarians and livestock producers have a ready-now treatment option for various livestock species should the fly enter the U.S. Negasunt Powder and Tanidil will be available only through the U.S. Animal Plant Health and Inspection Service (APHIS) and its National Veterinary Stockpile.
