Second Flesh-Eating Screwworm Case Raises Beef Supply Fears As Goldman Warns Outbreak "Could Be Disruptive"

Key Takeaways

• Second New World screwworm case found 5.6 miles from first in Texas.
• USDA response zone includes sterile insect dispersal to contain outbreak.
• Texas holds 12.1M cattle, 14% of U.S. herd, raising spread risk.
• A 50‑bp margin drop could cut JBS and MBRF EBITDA ~3%.
• South American exporters like Minerva could benefit from tighter U.S. beef supply.

Pulse Analysis

The re‑emergence of the New World screwworm in Texas marks the first U.S. detection since the 1960s eradication campaign, prompting a rapid USDA response. Officials have established a movement‑control zone and deployed sterile‑insect releases, a proven technique that reduces adult fly populations without resorting to mass culling. While nearby cattle tests remain negative, the proximity of the two cases underscores the parasite’s capacity to travel quickly across pastures, raising concerns among ranchers and biosecurity experts.

Beef markets are already under strain: the national herd sits at its lowest level in three‑quarters of a century, and futures are trading at historic peaks. Goldman Sachs analyst Thiago Bortoluci warns that a broader screwworm spread could exacerbate these pressures, squeezing packer profitability as feed costs rise and cattle supply tightens. A modest 50‑basis‑point dip in beef margins could shave roughly 3% off the consolidated EBITDA of major processors like JBS and National Beef, potentially prompting price pass‑throughs to consumers and a shift toward alternative proteins such as chicken.

Beyond domestic ramifications, the outbreak may reshape global trade flows. South American exporters, particularly Argentina’s Minerva, stand to gain if U.S. producers curtail output, creating a supply gap that foreign beef can fill. Policymakers are likely to intensify surveillance and interstate movement controls, balancing animal health safeguards with the need to keep supply chains fluid. Stakeholders should monitor USDA updates closely, as containment success—or failure—will influence everything from commodity pricing to export dynamics in the coming months.