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
Iowa Secretary of Agriculture Mike Naig discusses market conditions, policy priorities, and his outlook for agriculture moving forward.
NEFB President Mark McHargue recaps the Farm Bureau’s Annual Convention, producer sentiment in Nebraska, and discusses key issues facing agriculture.
Congressman Dusty Johnson of South Dakota joined us to discuss key ag policy developments and his outlook for agriculture in 2026.
From “right to repair” to investigations into the “Big Four” meatpackers, antitrust issues were a major legal topic in 2025 and promise to have a long-term impact on the agriculture industry in the future.
Tight beef cow supplies and steady demand point to continued record-level cull cow prices in 2026.
Expanded school access to whole milk provides modest but reliable demand support for U.S. dairy producers.

LATEST STORIES BY THIS AUTHOR:

Tennessee State Veterinarian Dr. Samantha Batey joined us with the latest on biosecurity efforts and the state’s new “Know Before You Show” initiative.
Texas Agriculture Commissioner Sid Miller discusses the state’s latest efforts to prevent the New World screwworm from reaching Texas.
Economists are also closely watching how policy decisions in Washington could influence markets moving forward. Analysts say deferred futures for corn, soybeans, and wheat suggest markets are operating near break-even levels, not at prices that would encourage expanded production.
House Agriculture Committee Chairman “GT” Thompson is pushing a “Farm Bill 2.0.”
University of Nebraska President Dr. Jeffrey Gold joined us with important insights on drug safety and rural health during the winter months.
Quinn Rutt of Upstream Ranch previews the Nebraska cattle operation’s 49th Annual Production Sale where buyers can expect standout sire groups and a blend of long-standing ranch practices with modern genetic selection.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.