In Missouri, the virus was confirmed at a large egg-laying farm in Newton County that has 1.175 million birds.
Elsewhere, officials confirmed H5N1 at a backyard farm in Oregon's Umatilla County that has 50 birds.
More detections in cats, cows
In related developments, APHIS today, in an update on H5N1 detections in mammals, reported six more confirmations in domestic cats from five different states, most with January sample collection dates. Two detections are in California, with positives also reported in Kansas, Louisiana, Iowa, and South Dakota.
APHIS also confirmed the virus in a sample from a harbor seal in Illinois (Cook County) and a serval in Michigan (Kent County). Both animals were sampled this month.
In dairy cow developments, APHIS confirmed one more detection in a dairy herd, another in California, raising the national total to 930 and the state's total to 713.
Source : umn.edu