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New World screwworm has been confirmed in 79 animal cases across Texas, New Mexico and Arizona since June, according to USDA data, with 25 cases still active. The latest case was a cow in Doña Ana County, New Mexico, and Arizona recorded its first case in a dog in Cochise County.
Five wild fly detections have also been logged in surveillance traps, four of them in October.
Continued spread raises the risk of movement restrictions and quarantines on cattle, which tightens domestic feeder and live cattle supply and supports prices. Renewed outbreaks after a summer decline also make the disease a lingering risk for herd management and cattle marketings.
tpr.orgTPR StaffNov 1, 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.
