Phys.org has an article on the dairy virus, but doesn't call it the dairy virus

https://phys.org/news/2025-01-bird-flu-farms-outbreaks-california.html
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What's the risk, and how is it spread?
Wild water birds, according to the CDC, are carriers of avian influenza A viruses. Birds infected with the disease can spread it among themselves and to other animals through mucous, saliva, and feces.
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It doesn't matter what the CDC is lying about.  In California the H5N1 genotype B3.13 avian influenza virus has been mainly (pretty much exclusively) spread from cattle, to humans, to other dairies and poultry farms.  The CDC and USDA have known this Since the first months of the dairy epidemic.  The dairy epidemic hasn't had wild bird infections involved since the first cows were infected.  After that the epidemiological study showed that it was spread from dairy to dairy and from dairy to poultry farms.  The infected farms shared cattle, or dairy workers.  California confirmed this with their contact tracing that they started after their first herds were detected.
Not calling the B3.13 genotype the dairy virus is just misinforming the public as to what the danger is, and where it is coming from.
Back in June the USDA released their report claiming that the infected poultry farms had shared workers with infected dairies.  They even knew that at least 2 dairy workers were involved in the Michigan poultry infections.  They also understood that infected dairies shared dairy workers, but the CDC and USDA did nothing to stop the spread of the virus to dairy workers and from them to other farms.  All their "suggestions" were just "recommendations" and not required to be implemented, and since they refused to try to identify all the infected herds the "recommendations" did not apply to all the herds that they didn't know were infected.  Even in California where it was pretty much proven that workers were a primary source of infecting poultry flocks and other dairies they did not require restriction of worker movements between farms, and ended up with more than 70% of their herds infected.
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"While most eggs consumed in California are imported from other states, about 40% are produced here, and two-thirds of egg-laying hens in California have been lost in the recent outbreak," Lyle said. "We anticipate that supply will remain tight for at least the next several weeks."
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California would not have lost two thirds of their layer chickens if they had restricted dairy workers from working on those poultry farms. Everyone understands that, but the USDA is still claiming that it is coming onto the poultry farms on dairy worker clothing and skin, but that is highly unlikely because the virus is known to only survive for less than 30 minutes in an infectous state on skin and clothing. Infected dairy workers are infecting the poultry farms and other dairies.  They know that 7 to 10% of the dairy workers in Michigan and Colorado that were tested had been infected.  California has likely had over 500 dairy workers infected by now.
The lies and misinformation that phys.org are spreading by believing the CDC and USDA is tragically lame, and should not be happening at this point in the dairy influenza epidemic.
Not making the distinction between the genotype B3.13 and the D1.1 genotypes is dangerous and likely willful suppression of the danger of each virus to humans.  They are both reassorted virus that have part of their genomes that are not the same as the H5N1 avian influenza virus that had 50% human mortality in Asia and Europe.  We are fortunate that human infections with the B3.13 virus have been mild and mutation to better infect humans has not occurred with this virus at this time.  The D1.1 genotype is the main danger because it does cause serious illness. Both humans infected thousands of miles apart (one in British Columbia and the other in Louisiana) had the mutations needed for human infection, and the claim is that since the wild birds did not have virus with those mutations that they had occurred within those individuals and made their infections as bad as they were.  the Canadian was in critical condition at one point and the Louisiana patient was in ICU.
Currently the CDC is not making a distinction between the two virus, but they should.  For the B3.13 they need to eliminate the infection among dairies and dairy workers.  Only one mutation is needed in the B3.13 genome to make the virus more human infective, but that mutation would change how the virus is currently infecting dairy cattle.  My take is that it hasn't happened yet because it isn't selected for in the tissue that is being infected.  For the D1.1 virus this is not the case, and the mutations needed seem to be rapidly selected for in the tissues that it can infect in humans.  What they need to do with respect to the D1.1 virus is to try to limit exposure of humans to wild birds and poultry that can be infected by wild birds.  This means that backyard chickens and other domestic birds have to be protected from infection by the wild birds, and commercial poultry farms have to be more diligent about their biosecurity measures.  The people that have birds exposed to infection by D1.1 need to be monitored.  They include commercial free range poultry growers that have their birds exposed to wild birds and people that have pet poultry and other birds like pigeons.
The CDC should be considering vaccinating these people, with bird exposure, against the D1.1 genotype.  The virus obviously rapidly mutates into a highly infective form (both initial cases had the required mutations).  Those likely to be infected need to be protected against that virus, and the vaccine should include the virus from the two known D1.1 patients because they have the mutations needed to make the virus more infective.  I'd make the vaccine from the most common D1.1 wild isolates and from the two human patients.
Ron Okimoto