Screwworm Threat Prompts Heightened Biosecurity as Experts Urge Vigilance

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.

STILLWATER, Okla. (RFD-TV)Recent detections of New World screwworm in Mexico have prompted heightened biosecurity measures across the livestock industry, with producers urged to remain alert and prepared forpotential outbreaks.

Dr. Rosslyn Biggs with the Oklahoma State University Center for Rural Veterinary Medicine joined us on Wednesday’s Market Day Report to discuss the situation and outline what producers should know moving forward.

In her interview with RFD-TV News, Dr. Biggs emphasized that early detection is critical for New World screwworm. She explained how producers can take a proactive approach and highlighted key signs in livestock to watch for that could indicate the deadly parasitic infection spread by flies.

Biggs also emphasized the importance of staying informed and vigilant as the situation develops, noting that OSU is working to ensure producers have access to timely information and resources, and outlined the first steps producers should take if they believe they are encountering an outbreak New World screwworm.

Additionally, Biggs stressed that establishing a relationship with a veterinarian before an emergency occurs is essential, noting that preparation and communication can make a significant difference during a disease response.

Finally, Dr. Biggs also shared her outlook for the year ahead on the rural veterinarian shortage and its potential implications for animal health and protection in rural communities.

Related Stories
Strong yields and higher cattle prices helped stabilize conditions, but weak crop prices and rising carryover debt remain major challenges for Eleventh District farmers.
Former Market Day Report anchor Janet Adkison was inducted into the National Association of Farm Broadcasting Hall of Fame, recognizing over 20 years of service sharing stories that impact Rural America.
Jake Charleston, with Specialty Risk Insurance, joins us now for an industry update and advice for cattle producers as they consider options for managing the risks of a murky market.
The National Milk Producers Federation will launch a new advocacy campaign to secure a final vote, urging House lawmakers to approve the bill as soon as they return from the Thanksgiving recess.
AFBF Vice President of Public Policy and Economic Analysis, Dr. John Newton, explains the factors contributing to the growing financial strain in the ag sector and the urgent need for swift economic support.
Tyson’s Nebraska plant closure and falling Cattle on Feed numbers send cattle markets tumbling. Analysts warn of tighter supplies, weak margins, and rising global competition.
A regional snapshot of harvest pace, crop conditions, logistics, and livestock economics across U.S. agriculture, prepared by RFD-TV Markets Specialist Tony St. James, for the week of Monday, November 24, 2025.
Texas Ag Commissioner Sid Miller warns horse owners after EHV-1 cases linked to the Waco WPRA Finals. Horses linked to recent Waco events should be isolated and closely monitored, as early action is critical to stopping the spread of EHV-1.
One trader said the products entering the U.S. are primarily grind and trim, noting that the volume and type of beef, on its own, should not cause a major disruption. However, he says fund traders are reacting heavily to headlines rather than market realities.

Marion is a digital content manager for RFD-TV and The Cowboy Channel. She started working for Rural Media Group in May 2022, adding a decade of experience in the digital side of broadcast media and some cooking experience to the team.

LATEST STORIES BY THIS AUTHOR:

Rancher David Kroa of One Man Ranch joins us to share the story of his remarkable Shorthorn cow, Trish, who is beating the odds.
American Soybean Association President Caleb Ragland shares the soybean sector outlook following the announcement of farm aid to offset losses for U.S. row crop growers.
Sen. Deb Fischer, of Nebraska, mentioned that Congress pushing through year-round E15 sales will do more to help commodity growers than more farm aid, which is currently a reality.
Sen. Moran joins us to discuss the farm aid package and the financial reality faced by row crop farmers in his home state of Kansas.
Tariff relief and new trade agreements may temper food costs by reducing import costs.
Agriculture Shows
From soil to harvest. Top Crop is an all-new series about four of the best farmers in the world—Dan Luepkes, of Oregan, Illinois; Cory Atley, of Cedarville, Ohio; Shelby Fite, of Jackson Center, Ohio; Russell Hedrick, of Hickory, North Carolina—reveals what it takes for them to make a profitable crop. It all starts with good soil, patience, and a strong planter setup.
Champions of Rural America is a half-hour dive into the legislative priorities for Rural America. Join us as we interview members of the Congressional Western Caucus to learn about efforts in Washington to preserve agriculture and tackles the most important topics in the ag industry on Champions of Rural America!
Featuring members of Congress, federal and state officials, ag and food leaders, farmers, and roundtable panelists for debates and discussions.
The goal of “Where the Food Comes From” is as simple as its name implies — host Chip Carter takes you along on the journey of where our food comes from — and we don’t just mean to the supermarket (though that’s part of the big picture!). But beyond where it comes from, how it gets there, and all the links in the chain that make that happen.
Join markets specialist Scott Shellady, better known as the Cow Guy, as he covers the market-close, breaking down headlines that drive the commodities and equities markets with commentary from respected industry heavyweights.