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USDA reported 42 additional New World screwworm cases since the previous week, bringing confirmed US animal cases to 113. The latest infestations were in Texas, New Mexico, and Arizona and affected horses, cattle, sheep, dogs, and a chicken; FDA also issued an emergency-use authorization for Bravecto to treat affected dogs and puppies.
Rising cases threaten livestock health and could prompt movement controls or trade restrictions, while treatment and prevention raise producer costs. Potential cattle impacts may tighten beef supply and support cattle prices, although the report gives no direct estimate of losses.
cidrap.umn.eduLiz Szabo, MANov 5, 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.
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.
Not enough comparable past events yet for a historical read.
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.
