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The USDA has confirmed New World screwworm cases in Texas, New Mexico and Arizona. UC Davis has listed veterinary experts available to media to discuss the parasite's biology, diagnosis, treatment and biosecurity.
Confirmed screwworm spread in US livestock states raises the risk of movement restrictions on cattle, which would tighten feeder cattle supply and could lift cattle prices.
ucdavis.eduAmy M QuintonNov 4, 2026After 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.
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.
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.
