Are Cattle Producers Ready if New World Screwworm Crosses the Border?

Large animal veterinarian Dr. Rosalyn Biggs with Oklahoma State University warns producers may not be prepared for the real threat of New World Screwworm.

Stillwater, Okla. (RFD-TV) — New World Screwworm cases in Mexico are up 32 percent, sparking growing concern in the U.S. cattle industry.

Dr. Rosalyn Biggs, an assistant professor of veterinary clinical sciences at Oklahoma State University, warns producers may not be prepared if the parasite crosses the border. Access to appropriate facilities for treatment and remembering how severe past outbreaks were are both essential.

“It’s one of my biggest concerns, frankly, with New World Screwworm, is access to facilities, [do producers have] access to be able to treat right?” Dr. Biggs said. “Facilities, as far as that investment goes -- it’s got to be something that makes sense. We’ve got to be able to get those animals caught. Get them handled based on what we could potentially face. That, and I have a concern that the vast majority of producers don’t remember it. That includes me. I have to listen to my father and others who had to deal with New World screwworm on a daily basis.”

Biggs says stopping the spread of Screwworm is all about daily inspections, and producers need to think of ways to make that easier now rather than later.

“Especially with the looming New World Screwworm, we had the announcement — I saw it in the middle of the night — that it’s 70 miles from the border,” Biggs continued. “It looks like it’s inching closer. If there’s any time to invest in facilities, it’s probably now. What you may find is that handling facilities will improve your cattle experience if you get good ones, right? I don’t know how many times we’ve just been dealing with something, dealing with something, dealing with something, and we finally make the investment. Why did we wait so long to do that?

Biggs said producers should keep animal handling in mind. If you finally catch that one hard-to-wrangle cow, she thinks it may be best to send them to the sale barn before issues arise, if treatment is needed.

“That’s another component, too. For that, you can have your veterinarian out. It’s a new, fresh set of eyes on it. Having facility consoles, I think, is a great approach and, again, now’s the time to invest.”

Related Stories
Tight fed supplies shift margin risk to packers, strengthening cattle price leverage but increasing volatility.
Prompt removal of Christmas trees and careful handling of decorations reduce winter fire risk during an already high-demand season for emergency services.
Reduced winter placements indicate tighter fed cattle supplies and greater leverage during peak-demand months.
AFBF Economist Faith Parum provides analysis and perspective on the Farmer Bridge Assistance Program—what commodity growers should know and potential remedies for producers facing crop losses where that aid falls short.
Federal nutrition policy is signaling a stronger demand for whole foods produced by U.S. farmers and ranchers. Consumer-facing guidance favors animal protein, but institutional demand may change little under existing saturated fat limits.
Retail pricing confirms tight cattle supplies and supports continued leverage for producers, reinforcing the need for disciplined risk management.
Dr. Rosslyn Biggs with the Oklahoma State University Center for Rural Veterinary Medicine shares insight into biosecurity, preparedness, and animal health concerns facing livestock producers as New World screwworm outbreaks continue in Mexico.
Seasonal boxed beef softness does not change the tight-supply outlook — leverage remains closer to the farm gate heading into 2026.
Trade uncertainty—especially regarding soybeans—continues to weigh on future outlooks, even as farm finances and land values remain resilient.

Agriculture Shows
America’s Heartland brings positive, heartfelt stories about American agriculture to viewers in both urban and rural areas.
Hosted by Pam Minick, “The American Rancher” focuses on the people and places that make ranching an American lifestyle. This half-hour magazine format series features livestock producers and their ranches, animals, and ranching practices.
For the latest information on how to take your operation from good to great, tune into Ag PhD. The program includes a wide range of agronomic information from how to maximize your fertilizer program & tiling to stopping those yield-robbing insects and crop diseases and more.
RFD-TV is always creating new ways for rural America to educate and to be educated. RURAL AMERICA LIVE, the network’s longest-running self-produced program, is certainly no exception.