What would happen if the screwworm outbreak hit the U.S. cattle industry?

The markets are watching the screwworm situation happening in Mexico. Steps have been taken, but R-CALF warns an outbreak would be devastating for the U.S. cattle industry.

CEO Bill Bullard says he has been watching the situation since the beginning. He has been following a study by the Wildlife Conservation Society that followed outbreaks of the screwworm in other areas. He says their findings show that if the right action is not taken, it could quickly get out of hand.

“If the spread is allowed to advance unchecked, it is highly likely to follow the cattle trafficking route through Guatemala’s Maya biosphere reserve and into Mexico. And the article further states that once the screwworm crosses the border, controlling its spread within Mexican territory will be challenging. Past experiences have demonstrated the complexity and cost of eradicating these pest efforts in Mexico and the U.S. in 1991 exceeded 955 million in today’s currency. So what this information tells us is that we have a very serious threat of the introduction of a very serious foreign animal pest that has already spread to Mexico from South America.”

Right now, the U.S. still has an import ban on live cattle coming from Mexico. Economists warn this could cause more volatility moving forward.

Related Stories
New World Screwworm cases in Mexico, including one within 200 miles of the U.S. border, are adding pressure to livestock markets and trade decisions.
A look at the legislative year ahead as lawmakers return to Washington with a slate of trade concerns to tackle in 2026—from new Chinese tariffs on beef imports to the USMCA review this summer.
Cuba remains a small but dependable, cash-only outlet for U.S. grain and food products.
Strong global demand and falling stocks suggest continued price volatility for U.S. coffee buyers despite record world production.
U.S. dairy producers remain the primary growth engine globally, while tightening supplies in Europe and New Zealand could support export demand for American dairy products.
RealAg Radio host Shaun Haney explains why the 2026 USMCA review could directly affect dairy access, produce competition, and export reliability for U.S. farmers and ranchers.

LATEST STORIES BY THIS AUTHOR:

New Nebraska wildfires near containment, but damages still mount for ranchers across the region.
Widespread drought and extreme weather leave producers managing limited resources
Jose de Jesus explains the National Pork Board’s new campaign, “Taste What Pork Can Do,” which aims to build long-term engagement with Millennial and Gen-Z consumers.
Farm legal expert Roger McEowen highlights the legal challenges surrounding stray voltage, a recent court decision, and what it means for agricultural producers.