The Biggest Cattle Threat in Decades Is Here | Screwworm Confirmed in the U.S.

The biggest cattle health threat in decades is no longer south of the border.

Multiple New World screwworm cases have now been confirmed in the United States, raising concerns about cattle movement, beef supplies, livestock health, and the broader cattle market.

In this episode of Boots & Bushels, we break down what screwworm is, why producers should pay attention, how USDA is responding, and what this could mean for cattle prices moving forward.

We’ll also discuss quarantines, sterile fly releases, border impacts, and the key developments ranchers need to watch in the weeks ahead.

This is Boots & Bushels, your daily look at the markets that feed America.

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Transcript

SPEAKER_00 0:00

The biggest cattle threat in decades is no longer just sitting south of the border. It's now inside the United States. This is Boots and Bushels, and today we're talking about the New World Screwworm story, because this is not just an animal health headline anymore. This is a cattle market story. This is a border trade story. And if this spreads further, it becomes a beef supply story. Since then, additional cases have been confirmed in Texas and New Mexico, including cattle, a goat, and a dog. The USDA says the pest affects livestock, pets, wildlife, and less commonly, people. That changes the conversation. For months the story was, can the U.S. keep screw worm out? Now the story is can officials contain it before it becomes a wider livestock problem? New World Screwworm is not just another fly problem. The larvae feed on living tissue. They get into wounds, navels, ears, branding sites, and castration sites, or any open spot on animal. Left untreated, it can be deadly. That's why this hits ranchers differently than a normal disease headline. It means more inspection, more handling, more treatment, more labor, more movement restrictions, and more risk during a time when the cattle herd is already historically tight. USDA's state officials are responding with quarantines, surveillance, animal inspections, treatment requirements, and sterile fly releases. Around confirmed cases, quarantine zones have been set up to control movement and slow the spread. That affects cattle, horses, pigs, sheep, and goats. So now we have pressure on both sides of the border. Earlier, the U.S. had already restricted Mexican cattle imports because screw worm is moving through North Mexico. Earlier, the U.S. had already restricted Mexican cattle imports because screw worm was moving north through Mexico. They had already created problems for Texas feedlots that depend on Mexican feeder cattle. Reuters reported that the border closure was helping some Mexican beef operations while creating real pressure for Texas cattle business. Now Mexico is restricting imports from the U.S. That's not just a disease control move. That's a trade flow disruption. And when cattle supplies are already tight, any disruption in movement matters. The U.S. cattle herd is already small, beef prices are already high, feedlots have already been fighting for cattle, consumers have already been paying more at the meat case. Screwworm doesn't have to wipe out herds to affect the market, it only has to add uncertainty. If cattle cannot move normally, if ranchers face added inspection cost, if quarantine zones expand, or if buyers start pricing in more risk, that changes the tone of the cattle market fast. The key question now is containment. Can USDA, Texas, New Mexico, and Mexico slow this down with sterile fly releases and quarantines before it spreads further north? That's the line producers need to watch. Not just the number of confirmed cases, watch the geography, or new cases staying clustered. Or are they jumping into new counties, new states, or new wildlife populations? Because wildlife is one of the hardest parts of this story. Cattle can be inspected, goats can be treated, dogs can be taken to a vet. But deer, feral hogs, coyotes, and other wildlife do not respect fences or quarantine lines. That's why officials are treating this as a major animal health threat, not just a few isolated cases. The other thing to watch is sterile fly production. That's the backbone of screw worm control. Sterile male flies are released so wild females mate without producing offspring. It's the same basic strategy that helped eliminate screw worm from the US decades ago. But the system has to have enough sterile flies in the right places at the right time. If production can't keep up with the spread, the risk grows. That's why the USDA is now putting serious money into response. Reports say the federal effort could run over a billion dollars, including major investment in sterile fly capacity and containment. For producers, this is the part that matters most. This is not a food safety issue, it doesn't mean beef is unsafe. But it's absolutely an animal health, labor, movement, and supply chain issue, and those things can still affect prices. A rancher dealing with screw worm risk has more work. A buyer dealing with quarantine risk has more uncertainty. A feedlot dealing with border restrictions has fewer options, and a market dealing with fewer cattle does not need another supply shock. That's why the story's moving from veterinary circles into the cattle market conversation. The confirmed case count matters, but the bigger issue is confidence. Do cattle keep moving? Do quarantine stay local? Does the sterile fly response get ahead of the outbreak? Or does this become one more supply problem in a beef market that's already stretched thin? For now, producers should be watching wounds closely, reporting suspicious cases quickly, and paying attention to any new movement restrictions. Because the market is not just watching cattle numbers anymore, it's watching disease risk, and screwworm is now officially part of that risk. The story has changed. It's no longer could it reach the US? It has. Now the question is whether this becomes a contained outbreak or the next major pressure point in the American cattle market. The USDA just sent another bullish signal to the cattle market. In its June report, the USDA lowered its 2026 beef production forecast by 109 million pounds. The reason? Fewer cattle available for slaughter and continued herd tightness across the country. This doesn't mean beef disappears from grocery stores, but it does reinforce that producers have been watching for months. Cattle supplies remain extremely tight. With feeder cattle and live cattle prices already near record levels, traders are watching closely to see whether the herd can begin rebuilding or supplies stay constrained even longer. The bottom line, the USDA is telling the market there may be less beef coming than previously expected, and that's supportive for cattle prices. The USDA announced a new effort aimed at increasing grazing access on national forest lands. Federal officials say the goal is to reduce red tape and make it easier for ranchers to utilize available grazing resources. For Western producers, this could mean more flexibility and potentially lower feed cost if additional grazing opportunities become available. The details will matter, and producers will want to see how local implementation unfolds. But the announcement signals that USDA is putting a greater focus on livestock production and range utilization. For ranchers operating their federal lands, this is a story worth watching closely. A quiet but potentially important update comes from the USDA this week. Eligible producers can now review opportunities to increase or reallocate base acres under farm program rules. Base acres help determine payments under programs like ARC and PLC, so changes could impact future support payments for more operations. Many producers haven't looked at their base acre history in years, which is why farm managers and FSA offices expect increased interest in the program. This isn't the kind of story that moves futures markets overnight, but it could affect the bottom line on individual farms. If you are eligible, it may be worth reviewing your options before the enrollment period closes. There may be some good news for producers looking at equipment purchases. The U.S. has reduced tariffs on many farm and construction equipment imports, lowering rates to 15% in many cases. That doesn't automatically mean cheaper tractors, combines, or skid steers tomorrow. Manufacturers still have inventory costs, supply agreements, and pricing strategies to work through. But lower import costs could eventually help ease some of the pressure that producers have faced from high machinery prices. Equipment remains one of the largest capital expenses on many farms, so any reduction in cost is something producers should keep on the radar. The key question now is how much of those savings actually make their way down to the farmers and ranchers. Now let's take a look at where they're affecting producers across the country. The biggest concern remains the plains wheat belt, where drought continues to stress hard red winter wheat. USDA reduced its winter wheat production forecast this week, pointing directly to drought conditions and lower yields across the region. Meanwhile, a very active storm pattern continues across the Midwest. Producers from Nebraska through Iowa, Minnesota, Wisconsin, Illinois, and Missouri should stay alert for damaging wind, large hell, heavy rainfall, and isolated tornadoes. Localized flooding and field delays remain possible where storms repeatedly develop. The brighter spot is moisture. Parts of the corn belt and lower Mississippi Valley are expected to receive above normal rainfall over the next week, helping maintain soil moisture as corn and soybean crops move deeper into the growing season. In Texas and the southern plains, heat remains a concern. Triple digit temperatures are increasing livestock stress and putting additional pressure on pasture conditions in some areas. Out west, the story remains much of the same. Dry weather and above normal temperatures continue keeping drought concerns elevated across portions of the Rockies, Great Basin, and Pacific Northwest. That's your producer weather threat check for the week ahead. Looking at the futures markets, July corn closed at 417.5 down four and three quarter cents from last Monday. July soybeans closed at 11.21.5 down 8 cents from last Monday. Chicago wheat finished at $5.80, down $11.03. In livestock, August live cattle closed at $2.41.65, up $3.80 from last Monday. August feeder cattle finished at $353.90, up $11.27. July lean hogs closed at $98.80, down $2.80. Crude Oil finished the session at $90.26 per barrel, down $4.36. That's boots and bushels for Monday. I'll be back again next week.