USDA confirmed H5N1 bird flu in an Oregon dairy herd for the first time. The virus has been found in 51 herds over the past 30 days, most in Washington State, where 43 cases have been recorded since 8 October.
A farmworkers' union says illness among workers in the Yakima Valley is under-counted.
Spreading H5N1 in US dairy herds can cut milk output and raise concern over movement restrictions, which tightens dairy supply and supports milk and related feed demand dynamics; the effect on prices is likely modest so far.
After 24 past bullish disease events, Milk (Class III) moved a median -0.1% over 5 sessions (42% higher; middle half -2.1% to +0.5%), and -2.8% 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.