Re: 4 more dairy herds in California infected with H5N1.

On 3/7/2025 7:42 PM, RonO wrote:

https://ktla.com/news/california/h5n1-bird-flu-virus-detected-at-4- southern-california-dairy-farms/
 The USDA has not confirmed the infections and they do not say if it is B3.13 or D1.1.  All the herds in California should have been tested over a month ago.  The recent infections are likely due to the denial of worker infections and not restricting dairy worker movements off of infected farms to uninfected farms.  California understood that a lot of Dairy workers were being infected, but they refused to start testing dairy workers after their initial testing found more infected dairy workers than any other state.  They restricted cattle movements, but refused to restrict dairy worker movements.  The result has been that nearly all of their dairies have been infected and after detecting all the infected herds they are still having new infections because they do not have sufficient quarantine rules in place.  They also lost over 40% of their commercial layer flocks because they did not prevent dairy workers from going to poultry farms.
 Ron Okimoto
 

https://www.cdfa.ca.gov/AHFSS/Animal_Health/HPAI.html
Around half of California's infected dairies have fully recovered (373 out of 749).  There are around 900 herds in California, and new herd infections are still being allowed to happen even after all the herds have started to be routinely tested over a month ago.
Ron Okimoto