Arizona's First Screwworm Case Comes Weeks Before USDA's Planned Nov. 30 Reopening of the Nogales Cattle Port

After 122 past bullish disease events, Feeder Cattle moved a median +0.4% over 5 sessions (60% higher; middle half -1.0% to +1.6%), and +2.0% over 20.

• Jun 5, 2026Cattle futures rally on first US screwworm detection - CME | The Cattle Site+1.8%
• Mar 27, 2026Screwworm Fears are Reshaping the U.S. Cattle Feeding Industry+2.6%
• Jan 6, 2026As Screwworm Inches Closer, When Could the U.S. Reopen the Southern Border to Cattle Imports? - Drovers+0.9%
• Nov 29, 2024Mexico’s Screwworm Outbreak Delays Mexican Cattle Exports Into the US Until After the First of the Year - Oklahoma Farm Report-1.5%
• Jul 28, 2025Avian Flu Wiped Out Poultry. Now the Screwworm Is Coming for Beef.+1.0%

After 148 past bullish disease events, Live Cattle moved a median +0.4% over 5 sessions (62% higher; middle half -0.5% to +1.2%), and +1.4% over 20.

• Jun 5, 2026Cattle futures rally on first US screwworm detection - CME | The Cattle Site+0.4%
• Mar 27, 2026Screwworm Fears are Reshaping the U.S. Cattle Feeding Industry+2.5%
• Jan 6, 2026As Screwworm Inches Closer, When Could the U.S. Reopen the Southern Border to Cattle Imports? - Drovers-0.1%
• Jul 28, 2025Avian Flu Wiped Out Poultry. Now the Screwworm Is Coming for Beef.+1.1%
• Jun 4, 2026US screwworm case puts ranchers on alert, rallies cattle prices By Reuters+0.6%