Elanco Animal Health Commits to Supporting U.S. Livestock Producers and Pet Owners in Fight Against New World Screwworm

Rhea-AI Summary

Elanco Animal Health (NYSE: ELAN) outlined its support for veterinarians, livestock producers and pet owners following the first confirmed U.S. livestock case of New World screwworm in Texas. The parasite threatens many warm-blooded animals by larvae feeding on living tissue.

Elanco highlights a portfolio for pets and livestock, including Credelio Quattro (FDA conditional approval), Credelio and Credelio CAT (FDA EUAs), Negasunt Powder (FDA EUA), Tanidil (EPA Section 18 exemption) and Catron IV (EPA approved). Negasunt Powder and Tanidil will be supplied only via USDA APHIS and the National Veterinary Stockpile.

Positive

• Multiple NWS treatment options for dogs, cats, and livestock across several brands
• FDA conditional approval for Credelio Quattro to treat New World screwworm in dogs
• FDA Emergency Use Authorizations for Credelio and Credelio CAT against New World screwworm
• FDA EUA for Negasunt Powder to treat and prevent NWS larvae infestations in livestock
• EPA Section 18 emergency exemption for Tanidil to prevent and control NWS in livestock
• Government distribution via APHIS for Negasunt Powder and Tanidil through the National Veterinary Stockpile

Negative

• Product access limits: Negasunt Powder and Tanidil available only via APHIS distribution channels
• Reliance on emergency or conditional authorizations rather than standard full approvals for several NWS products

News Market Reaction – ELAN

+0.57%

16 alerts

+0.57% Session close to close

+2.6% Peak in 5 min

$13.10B Market Cap

0.0x Rel. Volume

In the Jun 4 session, ELAN gained 0.57%, reflecting a mild positive market reaction. Argus tracked a peak move of +2.6% during that session. Our momentum scanner triggered 16 alerts that day, indicating notable trading interest and price volatility.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement highlights Elanco’s readiness for the confirmed U.S. emergence of New World screww...

Analysis

This announcement highlights Elanco’s readiness for the confirmed U.S. emergence of New World screwworm, emphasizing an established portfolio of FDA‑ and EPA‑regulated options for pets and livestock. Recent history shows the company already secured emergency authorizations for key products and delivered stronger Q1 results with raised guidance. Investors may watch how widely NWS spreads, utilization of these treatments, and any further regulatory or supply‑chain updates as indicators of longer‑term impact on the business.

Key Figures

Industry experience: more than 70 years Time since eradication: more than 50 years

2 metrics

Industry experience more than 70 years Elanco animal health experience, including NWS work globally

Time since eradication more than 50 years Years since New World screwworm was eradicated from U.S. mainland

Historical Context

5 past events · Latest: May 18 (Positive)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
May 18	Product launch	Positive	+0.3%	Launch of Befrena mAb for canine dermatitis in large U.S. market.
May 14	Investor conferences	Neutral	-0.7%	Announcement of management participation in upcoming investor conferences.
May 6	Earnings results	Positive	+13.9%	Q1 beat with revenue growth and raised full‑year guidance targets.
Apr 27	Regulatory authorization	Positive	+0.3%	Emergency authorization for Negasunt and Tanidil against New World screwworm.
Apr 27	Correction notice	Neutral	+0.3%	Clarifying correction to earlier announcement on emergency NWS authorizations.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Operational and regulatory wins, especially earnings and product authorizations, have generally seen positive or mildly positive next‑day moves, with only a small pullback on neutral conference participation news.

Recent Company History

Over the last few months, ELAN reported strong Q1 2026 results on May 6 with raised full‑year guidance, which coincided with a 13.88% gain. The company also secured emergency authorizations for New World screwworm treatments on April 27, followed by a minor positive reaction. A new dermatology product launch on May 18 and routine correction and conference notices produced only small price changes. Today’s announcement extends the New World screwworm narrative by highlighting an existing treatment portfolio as the parasite reaches U.S. livestock.

Key Terms

fda conditional approval, fda emergency use authorization (eua), epa section 18 emergency exemption, epa approved, +4 more

8 terms

fda conditional approval regulatory

"Credelio Quattro™- A1 ... | Dogs | FDA Conditional Approval"

FDA conditional approval is a regulatory OK that lets a medical product be marketed while the company completes additional studies or meets certain requirements set by the agency. Think of it like a provisional driver’s license: the product can be used and generate revenue, but the company must deliver more proof of safety or effectiveness later, which matters to investors because the final, unrestricted approval (or failure to meet conditions) can strongly affect sales and valuation.

fda emergency use authorization (eua) regulatory

"Credelio™ (lotilaner) ... | Dogs | FDA Emergency Use Authorization (EUA)"

A FDA Emergency Use Authorization (EUA) is a temporary regulatory permission that allows a medical product—such as a vaccine, diagnostic test, or treatment—to be used during a declared public health emergency before it has full, long-term approval. For investors, an EUA can act like a fast-track green light that lets a company start selling and generating revenue sooner, but it also carries extra uncertainty because the product is still under review and the authorization can change or be revoked as more data emerges.

epa section 18 emergency exemption regulatory

"Tanidil™ ... | Variety of Livestock ... | EPA Section 18 Emergency Exemption"

A EPA Section 18 emergency exemption is a time-limited, government approval that lets farmers or regulators use a pesticide in a way not normally allowed when an urgent pest threat could cause significant crop loss and no safer alternatives exist. Think of it like a temporary emergency permit that can protect harvests but may bring extra costs, liability or regulatory scrutiny — information investors use to gauge short-term demand for pesticides, supply risks, and potential legal or reputation impacts.

epa approved regulatory

"Catron® IV (Permethrin) | ... | Livestock | EPA Approved"

EPA approved means a product, chemical or process has been reviewed and authorized by the U.S. Environmental Protection Agency as meeting federal safety, effectiveness and labeling standards. For investors, that approval is like a safety stamp that clears a product for legal sale and use, reduces the risk of sudden regulatory setbacks or recalls, and can unlock wider market access and steady revenue potential.

national veterinary stockpile regulatory

"available only through the U.S. Animal Plant Health and Inspection Service (APHIS) and its National Veterinary Stockpile."

A national veterinary stockpile is a government-kept reserve of animal vaccines, medicines, diagnostic kits and emergency supplies held for use during livestock or pet disease outbreaks. Investors watch it because its existence and size can limit the economic damage from animal epidemics, speed recovery for affected industries, and influence sales and contracts for animal-health companies — like a national emergency pantry that helps farms and supply chains bounce back faster.

emergency use authorization regulatory

"Receive Emergency Authorization for Use Against New World Screwworm in Livestock"

A regulatory emergency use authorization allows a government health agency to temporarily permit the use or sale of a medical product—such as a vaccine, test, or treatment—before full formal approval when there is a public health crisis. For investors, an authorization can rapidly open revenue and market access while carrying higher regulatory and demand risk, like a fast-track pass that speeds a product to customers but may still require further review and can affect a company's valuation and future sales prospects.

personal protective equipment technical

"including tracking and reporting requirements and required safety and personal protective equipment."

Personal protective equipment (PPE) are items like masks, gloves, gowns, respirators, face shields and safety goggles that protect workers from physical, chemical or biological hazards. For investors, PPE matters because demand, supply and regulatory requirements affect company costs, revenues and operational continuity — think of PPE as seatbelts and airbags for workplaces: they reduce risk and can influence a company’s financial performance and reputation.

new world screwworm (nws) medical

"the escalating threat posed by New World screwworm (NWS)."

A parasitic fly whose larvae feed on the living tissue of warm-blooded animals, causing painful wounds and heavy losses in livestock and pets. It matters to investors because outbreaks can trigger costly animal health responses, trade restrictions, insurance claims and spending on eradication programs — similar to a contagious pest that can shut down parts of an industry and force companies or governments to spend heavily on control measures.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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. "We want to thank the FDA, EPA and USDA, for all their work to prepare for this threat. We're committed to supporting our customers during this challenging time by delivering innovation, scientific expertise, and available resources to help treat New World screwworm and support the health and well-being of animals." 

With more than 70 years of animal health experience, including helping mitigate, prevent and treat New World screwworm in other parts of the world, Elanco is working alongside the U.S. animal health industry to help them fight against this parasite, offering a portfolio of options for pets and livestock that can help treat New World screwworm larvae infestations. 

Available Elanco Treatment and/or Prevention Options  

Product Name	Indication		Species		Regulatory Status
Credelio Quattro™- A1 (lotilaner, moxidectin, praziquantel, and pyrantel chewable tablets)	Treats New World screwworm larvae infestations		Dogs		FDA Conditional Approval
Credelio™ (lotilaner)	Treats New World screwworm larvae infestations		Dogs		FDA Emergency Use Authorization (EUA)
Credelio™ CAT (lotilaner)	Treats New World screwworm larvae infestations		Cats		FDA Emergency Use Authorization (EUA)
Negasunt™ Powder (coumaphos, propoxur, and sulfanilamide topical powder)	Treats and Prevents New World screwworm larvae infestations		Variety of Livestock and other Species		FDA Emergency Use Authorization (EUA)
Tanidil™ (Coumaphos, Propoxur)	Prevents and Controls New World screwworm larvae infestations		Variety of Livestock and other Species		EPA Section 18 Emergency Exemption
Catron® IV (Permethrin)	Kills and controls screwworm fly and maggots		Livestock		EPA Approved

Negasunt Powder and Tanidil will be available only through the U.S. Animal Plant Health and Inspection Service (APHIS) and its National Veterinary Stockpile. They will be distributed in coordination with state animal health officials and federally recognized tribal agencies. In the near future, APHIS will share additional information about the requirements for use, including tracking and reporting requirements and required safety and personal protective equipment. 

As New World screwworm enters the United States, Elanco is committed to working alongside producers as they continuously evolve management practices and to help them implement prevention and treatment protocols to use the right product at the right time. 

To learn more about Elanco's ongoing efforts and historical perspective on New World screwworm, please visit our previous coverage: 

• Elanco's Negasunt™ Powder (Coumaphos, Propoxur, Sulfanilamide Topical Powder) and Tanidil™ (Coumaphos, Propoxur) Receive Emergency Authorization for Use Against New World Screwworm in Livestock 
• Elanco's Credelio Quattro™-CA1 (lotilaner, moxidectin, praziquantel, and pyrantel chewable tablets) Receives First FDA Conditional Approval for Treatment of New World Screwworm in Dogs 
• Elanco's Credelio™ CAT (lotilaner) Receives First FDA Emergency Use Authorization (EUA) for Treatment of New World Screwworm (NWS) in Cats 
• Elanco's Credelio™ (lotilaner) Receives First Ever FDA Emergency Use Authorization (EUA) against New World Screwworm (NWS) in Dogs 

To learn more about New World screwworm (NWS) using the following resources: 

• USDA NWS Alert and Fact Sheet 
• NCBA NWS Resources 
• FDA Information for Veterinarians on NWS 

About Elanco Animal Health 

Elanco Animal Health Incorporated is a global leader in animal health dedicated to innovating and delivering products and services to prevent and treat disease in farm animals and pets, creating value for farmers, pet owners, veterinarians, stakeholders and society as a whole. With 70 years of animal health heritage, we are committed to breaking boundaries and going beyond to help our customers improve the health of animals in their care, while also making a meaningful impact on our local and global communities. At Elanco, we are driven by our vision of Food and Companionship Enriching Life and our purpose – all to Go Beyond for Animals, Customers, Society and Our People. Learn more at www.elanco.com. 

Indications for Credelio Quattro/Credelio Quattro-CA1 

Credelio Quattro is indicated for the prevention of heartworm disease and the treatment and control of roundworm, hookworm, and tapeworm infections. Credelio Quattro kills adult fleas and is indicated for the treatment and prevention of flea infestations and the treatment and control of tick infestations for 1 month in dogs and puppies 8 weeks of age and older and weighing 3.3 pounds or greater. Credelio Quattro is indicated for the prevention of Lyme disease infections as a direct result of killing black-legged ticks. 

Credelio Quattro-CA1 is conditionally approved for the treatment of infestations caused by New World screwworm (NWS) larvae in dogs and puppies 8 weeks of age and older and weighing 3.3 pounds or greater. 

Important Safety Information for Credelio Quattro/Credelio Quattro-CA1 

Lotilaner, an ingredient in Credelio Quattro/Credelio Quattro-CA1, belongs to the isoxazoline class and has been associated with neurologic adverse reactions like tremors, incoordination, and seizures even in dogs without a history of seizures. Use with caution in dogs with a history of seizures or neurologic disorders. Dogs should be tested for existing heartworm infections before Credelio Quattro/Credelio Quattro-CA1 administration as it is not effective against adult heartworms. The safe use in breeding, pregnant, or lactating dogs has not been evaluated. The most frequently reported adverse reactions in clinical trials were vomiting and diarrhea. 

Credelio Quattro-CA1 is conditionally approved by the FDA pending a full demonstration of effectiveness under application number 141-619. If you suspect that your dog is infested with NWS larvae, seek veterinary care immediately for treatment to include removal of larvae and appropriate wound care. 

For complete safety information, please see the Credelio Quattro/Credelio Quattro-CA1 product label or ask your veterinarian. 

Emergency Use Authorization of Credelio (lotilaner) Chewable Tablets for New World Screwworm (NWS) 

The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization (EUA) for the emergency use of the approved product Credelio (lotilaner) chewable tablets for the treatment of infestations caused by NWS (Cochliomyia hominivorax) larvae (myiasis) in dogs and puppies. Credelio is not approved for this use. 

Credelio (lotilaner) is approved for other uses in dogs and puppies. 

For additional information on the EUA, please refer to the Credelio NWS Fact Sheet. 

Limitations of Authorized Use 

Credelio (lotilaner) chewable tablets is authorized for this use only for the duration of the declaration that circumstances exist justifying the authorization of the emergency use of Credelio (lotilaner) chewable tablets under section 564(b)(1) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. § 360bbb-3(b)(1), unless the authorization is terminated or revoked sooner. 

Indications for Credelio 

Credelio kills adult fleas and is indicated for the treatment and prevention of flea infestations and treatment and control of tick infestations (lone star tick, American dog tick, black-legged tick, brown dog tick, and longhorned tick) for one month in dogs and puppies 8 weeks and older and 4.4 pounds or greater. Credelio is indicated for the prevention of Lyme disease infections as a direct result of killing black-legged ticks. 

Important Safety Information for Credelio 

Lotilaner is a member of the isoxazoline class of drugs. This class has been associated with neurologic adverse reactions including tremors, incoordination, and seizures. Seizures have been reported in dogs receiving this class of drugs, even in dogs without a history of seizures. Use with caution in dogs with a history of seizures or neurologic disorders. The safe use of Credelio in breeding, pregnant or lactating dogs has not been evaluated. The most frequently reported adverse reactions are weight loss, elevated blood urea nitrogen, increased urination, and diarrhea. For complete safety information, please see Credelio product label or ask your veterinarian. 

Emergency Use Authorization for Credelio CAT (lotilaner) for New World Screwworm (NWS) 

The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization (EUA) for the emergency use of the approved product Credelio CAT (lotilaner) for the treatment of infestations caused by NWS (Cochliomyia hominivorax) larvae (myiasis) in cats and kittens. Credelio CAT is not approved for this use. 

Credelio CAT is approved for other uses. 

For additional information on the EUA, please refer to the Credelio Cat NWS Fact Sheet. 

Limitations of Authorized Use 

Credelio CAT (lotilaner) is authorized for this use only for the duration of the declaration that circumstances exist justifying the authorization of the emergency use of Credelio CAT (lotilaner) under section 564(b)(1) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. § 360bbb-3(b)(1), unless the authorization is terminated or revoked sooner. 

Indications for Credelio CAT 

Credelio CAT kills adult fleas and is indicated for the treatment and prevention of flea infestations for one month in cats and kittens 8 weeks of age and older and weighing 2 pounds or greater. 

Credelio CAT is also indicated for treatment and control of black-legged tick infestations for one month in cats and kittens 6 months of age and older and weighing 2 pounds or greater. 

Important Safety Information for Credelio CAT 

Lotilaner is a member of the isoxazoline class of drugs. This class has been associated with neurologic adverse reactions including tremors, incoordination and seizures. Neurologic adverse reactions have been reported in cats receiving isoxazoline class drugs, even in cats without a history of neurologic disorders. Use with caution in cats with a history of neurologic disorders. The safety of Credelio CAT has not been established in breeding, pregnant and lactating cats. The effectiveness of Credelio CAT against black-legged ticks in kittens less than 6 months of age has not been evaluated. The most frequently reported adverse reactions are weight loss, rapid breathing and vomiting. For complete safety information, please see Credelio CAT product label or ask your veterinarian. 

Emergency Use Authorization of Negasunt Powder (coumaphos, propoxur, and sulfanilamide topical powder) for New World Screwworm (NWS) 

WARNING: Neurotoxicity. Read full Fact Sheet for complete information. 

• Coumaphos and propoxur can cause neurotoxicity. May be fatal if swallowed. May be fatal if inhaled. Harmful if absorbed through skin. Causes moderate eye irritation. Do not breathe dust. Avoid contact with eyes, skin, or clothing. 
  
  
• Use only with appropriate personal protective equipment (PPE): coveralls worn over long-sleeve shirt and long pants, shoes, socks, and protective eyewear; chemical-resistant gloves made of  barrier laminate, butyl rubber (≥ 14 mils), nitrile rubber (≥14 mils), neoprene rubber (>14 mils), natural rubber (≥14 mils), polyethylene, polyvinyl chloride (PVC) ≥14 mils, or Viton (>14 mils); and a minimum of a NIOSH-approved elastomeric half mask respirator consisting of protection factor (PF) 10 fitted with organic vapor (OV) cartridges and combination  R or P filters; or a NIOSH-approved gas mask with OV canisters; or a NIOSH-approved powered air purifying respirator with OV cartridges and combination HE filters. 
  
  
• This product is toxic to mammals, birds, fish, and aquatic invertebrates. 

The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization (EUA) for the emergency use of the unapproved product Negasunt Powder for the prevention and treatment of infestations caused by New World screwworm (Cochliomyia homnivorax) larvae (myiasis) in cattle, swine, goats, sheep, horses, donkeys, domestic hybrid equids, and captive wild, exotic, and zoo mammals. Negasunt Powder is not approved for this use. 

For use by employees of federal, state, local, and federally recognized tribal agencies, and persons working under their authority and at their direction. Also for use by or on the order of a licensed veterinarian in NWS infested zones and adjacent surveillance zones as defined by the U.S. Department of Agriculture (USDA). 

For additional information on the EUA and for complete safety information, please refer to the Negasunt Powder NWS Fact Sheet. 

Limitations of Authorized Use 

It is a violation of federal law to use this drug product other than as directed in the authorized Fact Sheet. 

Treated animals must not be slaughtered for human consumption within 28 days of the last treatment. 

A milk discard time has not been established for this product; do not use in animals producing milk for human consumption. 

A withdrawal period has not been established for this product in pre-ruminating calves; treated calves and calves born to treated cows must not be processed for veal. 

Do not use in horses intended for human consumption. Do not use in domestic indoor pets (e.g., dogs, cats, rodents, rabbits) nor in residences. Do not use in birds. Do not use in free-ranging wildlife. 

To avoid overexposure, each individual person cannot treat more than 3 large wounds (>2 inches diameter) a day or more than 30 small superficial wounds (≤2 inches diameter) a day (or an equivalent thereof) with Negasunt Powder or any other coumaphos-containing products. 

Negasunt Powder is authorized for this use only for the duration of the declaration that circumstances exist justifying the authorization of the emergency use of Negasunt Powder under section 564(b)(1) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. § 360bbb-3(b)(1), unless the declaration is terminated or the authorization is revoked sooner. 

Federal law prohibits the extra-label use of this drug. 

Additional Important Safety Information 
Not for use in humans. Keep out of reach of children. Only handlers wearing required PPE may be in the area during application. Do not apply in a confined, non-ventilated area; provide thorough ventilation. Call a poison control center or doctor immediately for treatment advice if Negusant Powder is swallowed, inhaled, on skin or clothing, or in eyes. Sulfonamides are contraindicated in animals that are hypersensitive to them and in animals with severe renal or hepatic impairment. For external use only on animals. Do not contaminate water, feed, troughs, feed handling equipment, or milk or meat handling equipment. Use with caution in very young, weak, or debilitated animals. In the case of overdose, treat with atropine sulfate or pralidoxine chloride (2-PAM) as soon as possible. The most common adverse reactions associated with organophosphate and carbamate toxicity in animals include frequent urination and defecation, muscle twitching, and watering eyes. 

Important Information about Tanidil 
Tanidil™ is an unregistered product for distribution and use only under a Section 18 emergency exemption. The Section 18 labeling must be in the possession of the user at the time of pesticide application. This product may only be used to prevent or control New World screwworm in and on animal wounds on labeled animal host species. 

For use only by federal, state, local, and federally recognized tribal agencies, and persons working under their supervision; personnel at quarantine stations and areas; veterinarians; veterinarians or certified applicators at livestock and game facilities, zoos, wildlife facilities, animal rehabilitation centers; and wildlife professionals. 

Read the entire label. This product must be used strictly in accordance with this label's precautionary statements and use directions, as well as with all applicable state and federal laws and regulations. Please visit the Tanidil fact sheet for more information. 

Use Period: This exemption is effective on April 27, 2026 and expires on April 27, 2029. No applications of Tanidil may be made under the emergency exemption before its effective date or after its expiration date. 

Credelio, Credelio Quattro, Negasunt, Tanidil, Catron, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates. © 2026 Elanco or its affiliates 

Investor Contact: Tiffany Kanaga (765) 740-0314 tiffany.kanaga@elancoah.com
Media Contact: Colleen Parr Dekker (317) 989-7011 colleen.dekker@elancoah.com
Media Contact: Mika Takahashi (765) 335-4070 mika.takahashi@elancoah.com
Media Contact: Season Solorio (765) 316-0233 season.solorio@elancoah.com  

 

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SOURCE Elanco Animal Health

FAQ

What did Elanco (NYSE: ELAN) announce about New World screwworm on June 4, 2026?

Elanco announced resources and treatments to help combat New World screwworm after the first confirmed U.S. livestock case in Texas. According to Elanco, its portfolio supports veterinarians, livestock producers and pet owners with options for treating larvae infestations in pets and livestock.

Which Elanco (ELAN) products treat New World screwworm in dogs and cats?

Elanco lists Credelio Quattro, Credelio, and Credelio CAT for treating New World screwworm larvae in dogs and cats. According to Elanco, Credelio Quattro has FDA conditional approval, while Credelio and Credelio CAT hold FDA Emergency Use Authorizations for this indication.

What regulatory approvals do Elanco New World screwworm products have as of June 2026?

Elanco reports FDA conditional approval for Credelio Quattro in dogs and FDA EUAs for Credelio and Credelio CAT. According to Elanco, Negasunt Powder has an FDA EUA, Tanidil holds an EPA Section 18 emergency exemption, and Catron IV is EPA approved.

How will Negasunt Powder and Tanidil be distributed to U.S. livestock producers?

Negasunt Powder and Tanidil will be available only through USDA APHIS and its National Veterinary Stockpile. According to Elanco, distribution will occur in coordination with state animal health officials and federally recognized tribal agencies under defined usage requirements.

Why is New World screwworm a concern for Elanco customers and U.S. livestock producers?

New World screwworm is concerning because its larvae feed on living tissue in many warm-blooded animals. According to Elanco, this poses risks to animal health, welfare, and producer livelihoods, prompting demand for prevention and treatment protocols using authorized products.

What support is Elanco offering veterinarians and producers against New World screwworm in 2026?

Elanco is offering treatment products, scientific expertise and guidance to help implement prevention and treatment protocols. According to Elanco, it plans to work alongside producers and veterinarians so they can choose the right product at the right time for affected animals.