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HPAI H5 clade 2.3.4.4b was confirmed by PCR in a dairy cattle herd in Oregon, the first reported case of the virus in cattle in that state, according to USDA APHIS. The herd had tested negative before this detection through routine surveillance under the National Milk Testing Strategy.
Dairy cattle infections add a new source of disease risk to the US milk supply, though the detection is limited to one herd and officials say milk supply is safe. Price impact is likely minor unless spread to more herds grows.
thedairysite.comMelanie EppNov 12, 2026After 22 past neutral disease events, Milk (Class III) moved a median -0.1% over 5 sessions (41% higher; middle half -1.4% to +0.5%), and +0.2% 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.
