
The UK's Defra and Animal and Plant Health Agency publish outbreak assessments of avian influenza H5N1 in US domestic livestock. The page lists assessments dated April 2024, August 2024 and an updated February 2025 assessment.
The findings cover the spread of the virus in US cattle.
Confirmed H5N1 infection in dairy herds raises disease-control and milk output concerns, but the direct effect on feed demand is limited. Any price effect would be modest unless losses grow.
After 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.