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From: RonO <rokimoto557@gmail.com>
Newsgroups: talk.origins
Subject: Re: H7N9 in a broiler breeder flock
Date: Wed, 26 Mar 2025 19:59:27 -0500
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On 3/20/2025 8:24 AM, RonO wrote:
> On 3/19/2025 8:42 PM, RonO wrote:
>> On 3/19/2025 6:34 PM, RonO wrote:
>>> https://www.cidrap.umn.edu/avian-influenza-bird-flu/usda-launches- 
>>> biosecurity-steps-poultry-producers-adds-details-h7n9-avian
>>>
>>> https://www.aphis.usda.gov/news/program-update/aphis-confirms-h7n9- 
>>> highly-pathogenic-avian-influenza-hpai-us-flock
>>>
>>> The H7N9 is claimed to be similar to virus known to be circulating in 
>>> wild birds in North America.  The breeder flock was infected in 
>>> Mississippi and the infection is not related to the H5N1 B3.13 or 
>>> D1.1 virus.
>>>
>>> 3 more dairy herds in Idaho have been confirmed to be positive for 
>>> H5N1, but they are not releasing the genotype information.  6 herds 
>>> since the end of Feb., but there were over 30 confirmed before the 
>>> last confirmations in Oct. 2024 identified due to California contact 
>>> tracing.
>>>
>>> https://www.cdfa.ca.gov/AHFSS/Animal_Health/HPAI.html
>>>
>>> California is claiming that 422 herds of the 755 infected are fully 
>>> recovered.
>>>
>>> Ron Okimoto
>>>
>> https://www.cdc.gov/bird-flu/spotlights/h5n1-response-03192025.html
>>
>> New CDC update.  The Ohio poultry worker was infected with another 
>> H5N1 related to the D1.1 genotype.  It has been designated genotype 
>> D1.3 with the same H5N1 virus as an ancestor of both D1.1 and D1.3.  
>> They do not give the genetic make up of the D1.3 genotype.
>>
>> The claim 989 dairy herds confirmed infected (probably most infected 
>> herds were likely never tested).  Since April 2024 335 commercial 
>> poultry flocks and 207 backyard flocks for a total of 90.9 million 
>> birds were infected, but they do not state the genotype of the virus 
>> involved.   Nearly all the commercial layer flocks that went down 
>> during this period accounting for the vast majority of animals were 
>> infected with the dairy virus.  A few were found to be infected by the 
>> D1.1 genotype.
>>
>> They finally have the antibody results for two Michigan Dairy workers 
>> infected early in the dairy epidemic.  One was shedding virus and was 
>> antibody positive, but the other did not have virus isolated and did 
>> not produce neutralizing antibodies.  This is like the 2022 poultry 
>> workers infected with H5N1 that did not produce neutralizing 
>> antibodies.  This just means that even if we tested all the dairy 
>> workers for antibodies we would still miss a lot of them that had been 
>> infected.  The Missouri patient and their contact (believed to have 
>> been infected at the same time) were only positive for one of the 3 
>> antibody tests.
>>
>> They lump all the human cases together as H5N1 and claim the mortality 
>> rate is much lower than the 50% for H5N1 infection in Europe and Asia, 
>> but the B3.13 virus is a reassorted virus is only half Asian H5N1.  
>> The D1.1 genotype doesn't even have the Asian N1 allele.  So they are 
>> claiming only 1 mortality out of 70, but probably only around 10 
>> humans have been infected with the D1.1 genotype 4 have been 
>> hospitalized, two had to go on respirators and one died.  They do not 
>> tell the public that statistic.
>>
>> Ron Okimoto
>>
> https://www.cidrap.umn.edu/avian-influenza-bird-flu/usda-launches- 
> biosecurity-steps-poultry-producers-adds-details-h7n9-avian
> 
> The USDA is annoucing a new biosecurity plan, but if they do not have 
> restriction of dairy workers from working on poultry farms they are 
> bound to keep failing until they get the dairy epidemic under control. 
> If California had restricted dairy workers from working on poultry farms 
> they would have not lost over 40% of their commercial layer flocks, Most 
> of that 90 million bird loss would have been avoided across the US.  It 
> doesn't matter if they make houses bird proof and even implement HEPA 
> filters an infected dairy worker will still infect the birds on any farm 
> that they work on.
> 
> Ron Okimoto

https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/hpai-confirmed-cases-livestock

Another California herd and 3 more Idaho herds have shown up in the 
database, but they haven't announced them as confirmed at this time. 
They are excluding the last Minnesota dairy from the database because it 
is the second time that it has been infected.  They should still count 
it because it must have gotten infected by a virus sufficiently 
different so that it can infect cattle that have already been infected. 
They are still withholding the genotype of the virus infecting the dairy 
herds since late Feb. (since the second round of Idaho infections 
started Feb 28.  We know that the D1.1 genotype has been infecting 
cattle in Nevada and Arizona, but they won't say what the genotype is 
for the most recent Idaho and California infections.

Ron Okimoto