You may have read some recent news articles about a “concerning new mutation” noted in some infected dairy cattle herds recently reported. Sequence data reportedly shows the PB2 E627K mutation is present in four herds, with the data being reported on Tuesday, March 11, 2025. While the scientific community has been on alert for this mutation, […]
We now have a second report of dairy cattle infected with H5N1 genotype D1.1, the bird flu strain circulating in wild birds. This is different than the genotype B3.13 viruses circulating through dairy cattle herds. Arizona reports H5N1 genotype D1.1: On Friday, February 14, the health department of Maricopa County, Arizona issued a press release
The USDA has confirmed that Nevada dairy cattle herds have been infected with H5N1 genotype D1.1, the strain circulating in birds, as opposed to genotype B3.13, the strain we have seen moving through dairy cattle in the U.S. This is the first time this strain has been found in dairy cattle. The outbreak in Nevada
In recent bird flu news, we have a report of a new H5N9 virus detected in a commercial duck farm in Merced County, California. At this time we do not have many details about this outbreak or the new bird flu strain. However, the epidemiological summary on the WAHIS dashboard does provide the following information:
The H5N1 bird flu virus has been officially confirmed in a sample of raw milk sold at stores in California. No one has reported illness associated with consumption of raw milk to date, but the concern of further spread of this virus as it makes its way through dairy cattle, and now dairy products, is
An outbreak of bird flu in October 2022 spread rapidly through a mink farm in the Galicia region of Spain. This received massive media coverage, as it renewed concerns that the virus could adapt to humans. But this outbreak was part of the much larger, unprecedented, currently ongoing H5N1 panzootic that has caused massive losses in
Here we are eight months after the first detections of avian flu was made in U.S. dairy cattle. This blindsided the agricultural sector and the scientific community, and it is far from over. There is so much we still don’t know about how and why this strain of bird flu spilled over into dairy cattle,
