Zoetis Shares Resources and Tips for New World Screwworm Response and Management

PARSIPPANY, N.J. — June 4, 2026 — With the recent New World screwworm (NWS) incursion in Texas, it’s important to be aware of your herd’s risk level and be vigilant in checking your livestock for signs of an infestation.

"We understand that livestock producers and animal caretakers are facing a stressful and uncertain time as New World screwworm threatens what they've worked so hard to build. At Zoetis, we stand with you because protecting your animals means protecting your livelihood, your families, and your way of life. Planning ahead is critical, and we're committed to being a resource and a partner," said Kristin Kasselman, Senior Vice President, Head of Livestock & Equine, Zoetis.

Producers are encouraged to diligently observe livestock daily, if possible, for signs of NWS infestation. An intense smell of decay is often the first indication, so you will want to investigate to find the source of the odor.

Be prepared to report a New World screwworm infestation to your veterinarian or state veterinary authority as quickly as possible. Now is a good time to review and bookmark the U.S. Department of Agriculture response playbook for quick, practical guidance.

“If you haven’t already prepared a plan, we encourage producers to work closely with their veterinarian to put written action plans in place now,” said Dr. Mitch Blanding, Director of Beef Technical Services, Zoetis. “It will be critical to quickly report any case of New World screwworm. We want to be able to document and isolate these cases, clean and debride the wounds where possible, remove any larvae that are easily removed, and apply approved topicals to the wound to promote healing.”

Your herd veterinarian will be the best resource in determining prevention and treatment options.

Zoetis offers Dectomax®-CA1 Injectable (doramectin injection), the only nonprescription conditionally approved parasite control product labeled for prevention and treatment of infestations caused by NWS larvae in cattle and for prevention of reinfestation for 21 days.

The U.S. Food and Drug Administration has issued an Emergency Use Authorization (EUA) for the emergency use of the approved/conditionally approved products Dectomax/Dectomax-CA1 for the following indications...


Please refer to Zoetis website for full information: https://news.zoetis.com/press-releases/press-release-details/2026/Zoetis-Shares-Resources-and-Tips-for-New-World-Screwworm-Response-and-Management-2026-Q-yi4qU1cE/default.aspx