Pressure to Stop Importing Brazilian Beef After Mad Cow Case Confirmed

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.

• Jul 31, 2026Cattle futures rebound as Mexican import fears ease - CME | The Beef Site+0.6%
• Jun 4, 2026New World Screwworm Confirmed in US - CME Feeder Cattle Futures Surge After Early Slide+0.6%
• May 12, 2025Cattle futures surge over US halt to Mexican cattle imports | Reuters+0.3%
• Nov 27, 2024Cattle Imports from Mexico Restricted after New World Screwworm Detection | Ohio BEEF Cattle Letter+1.4%
• Nov 25, 2024US suspends Mexican cattle imports after New World screwworm case | Reuters+1.6%

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 4, 2026New World Screwworm Confirmed in US - CME Feeder Cattle Futures Surge After Early Slide+3.4%
• May 12, 2025Cattle futures surge over US halt to Mexican cattle imports | Reuters-0.4%
• Nov 27, 2024Cattle Imports from Mexico Restricted after New World Screwworm Detection | Ohio BEEF Cattle Letter-0.4%
• Nov 25, 2024US suspends Mexican cattle imports after New World screwworm case | Reuters+1.0%
• Jun 3, 2026Flesh-eating screwworm confirmed in Texas calf as parasite crosses border from Mexico | Reuters+1.6%

Not enough comparable past events yet for a historical read.