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The number of confirmed New World screwworm cases in US domestic animals has risen to 128, with half detected in the last two and a half weeks. Detections in horses, cattle and sheep in Texas, plus rising cases in New Mexico and Arizona, were reported, and USDA plans to reopen the Nogales, Arizona port of entry from Mexico at the end of November.
Rapid spread among US livestock constrains cattle supply and supports live cattle prices. The planned Nogales reopening would add Mexican feeder cattle imports, which could weigh on feeder cattle prices if the border reopens as planned.
thefencepost.comJerry Hagstrom, The Hagstrom ReportNov 13, 2026After 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.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
