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
House lawmakers push toward a Farm Bill vote as debate grows over E15, Prop 12, and input costs, with farmers seeking certainty and policy updates.
RFD News correspondent Frank McCaffrey spoke with the Texas Shrimp Association at the Port of Brownsville about the future of the USDA’s new Office of Seafood.
Higher cow numbers and slightly stronger output per cow pushed milk production above last year.
Food inflation is still building in 2026, with beef leading pressure while eggs and dairy offer some relief.
Rotational grazing can improve pasture use and soil health while helping control feed and drought-related risk.
March cold storage data showed generally tighter year-over-year stock levels across several key meat and dairy categories.

LATEST STORIES BY THIS AUTHOR:

Meredith Petersen joined us to discuss the National Swine Health Strategy, how it was developed through industry collaboration, potential challenges ahead, and its expected benefits for pork producers.
K-State researchers advise producers to take action, highlighting that prevention is essential for controlling tick populations as cases spread West.
Shaun Haney joined us to discuss rising concerns over farmland ownership in Canada, actions being considered by provinces and farm groups, and the potential impacts of tighter regulations.
U.S. Soybean Export Council CEO Jim Sutter joins us to discuss the impact of new trade development funding for U.S. soy.
Rep. Adrian Smith joins us to discuss the push for nationwide year-round E15 sales and legislative hurdles for getting it into the farm bill.
The Supreme Court’s ruling could affect pesticide warning claims well beyond Roundup. Richard Gupton with the Ag Retailers Association joins us to explain the importance of federal pesticide labeling standards and discuss the potential impact on the ag industry and supply chain.
Agriculture Shows
A few years ago, the Stoney Ridge Farmer moved from a 1/3-acre lot in the city to a 150-acre farm nestled in the foothills of the Blue Ridge Mountains of North Carolina.
Cole Sonne is a fourth-generation farmer living in Southeastern South Dakota. His family farm raises Black Angus bulls and grows alfalfa, grass, hay, corn, and soybeans. Cole says, “I make these videos for your entertainment (and for my own, as well)!”
How Farms Work is a family-friendly YouTube channel that showcases beef and crop farms located in Southwestern Wisconsin. Equipment operation, techniques, and farming strategies are all first-hand accounts given by Ryan, an Agriculture Business major whose family runs these farms.
Misilla is the host of Learn to Grow and The Crafty Mom on YouTube. A Pacific Northwest mother of four who is passionate about organic gardening, sustainable living, homesteading, and education, her videos and social media posts consist of gardening, outdoor recreation, healthy living, crafts, science experiments, DIY projects, and delicious recipes.