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A human case in Ohio. Not surprised given the number of affected poultry in the last 30 days in that state which is over 10 million.
Also not great is the resurgence of seasonal flu this year which is a reassortment opportunity.
I still think there are human cases that we do not know about (and unknown animal cases too).
This situation continues to be completely out-of-control.
Comment
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Genetic data and meteorological conditions: unravelling the windborne transmission of H5N1 high-pathogenicity avian influenza between commercial poultry outbreaks
Posted February 12, 2025.
Download PDF
VAlexander Nagy, Lenka Černíková, Kamil Sedlák
doi: https://doi.org/10.1101/2025.02.12.637829
This article is a preprint and has not been certified by peer review [what does this mean?].Abstract
Understanding the transmission routes of high-pathogenicity avian influenza (HPAI) is crucial for developing effective control measures to prevent its spread. In this context, windborne transmission, the idea that the virus can travel through the air over considerable distances, is a contentious concept and, documented cases are rare. Here, though, we provide genetic evidence supporting the feasibility of windborne transmission. During the 2023-24 HPAI season, molecular surveillance identified identical H5N1 strains among a cluster of unrelated commercial farms about 8 km apart in the Czech Republic. The episode started with the abrupt mortality of fattening ducks on one farm and was followed by disease outbreaks at two nearby high-biosecurity chicken farms. Using genetic, epizootiological, meteorological and geographical data, we reconstructed a mosaic of events strongly suggesting wind was the mechanism of infection transmission between poultry in at least two independent cases. By aligning the genetic and meteorological data with critical outbreak events, we determined the most likely time window during which the transmission occurred and inferred the sequence of infected houses at the recipient sites. Our results suggest that the contaminated plume emitted from the infected fattening duck farm was the critical medium of HPAI transmission, rather than the dust generated during depopulation. Furthermore, they also strongly implicate the role of confined mechanically-ventilated buildings with high population densities in facilitating windborne transmission and propagating virus concentrations below the minimum infectious dose at the recipient sites. These findings underscore the importance of considering windborne spread in future outbreak mitigation strategies.
...
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FluTrackers.com
@FluTrackers
US - CDC: "These findings suggest there could be U.S. states
with A(H5)-positive people and animals that have not yet
been identified."
https://flutrackers.com/forum/forum/national-international-government-ngo-preparation-response/cdc/h5n1-information/1007569-cdc-notes-from-the-field-seroprevalence-of-highly-pathogenic-avian-influenza-a-h5-virus-infections-among-bovine-veterinary-practitioners-%E2%80%94-united-states-september-2024… #H5N1
1:59 PM · Feb 13, 2025
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bump this
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FluTrackers.com
@FluTrackers
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41m
Can everyone see the various types of animals with #H5N1? All
types. Everywhere. It is astonishing. It is too many to "tweet"
everyday.
Humans are mammals.
Take care of you.
15
64
1.3K
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FluTrackers.com
@FluTrackers
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4m
US - Please, with direct links just posted below, keep track yourself. Take a look at the lists of confirmed #H5N1 around you. Vaccinating the poultry will not stop the #H5N1 playbook. Nature is going to do what it wants. The animal situation is completely out-of-control.
FluTrackers.com
@FluTrackers
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13m
Here is direct link to USDA - Detections of Highly Pathogenic Avian Influenza in Wild Birds Last Modified: February 18, 2025 - 12,064 entries https://aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/wild-birds… #H5N1
FluTrackers.com
@FluTrackers
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17m
Our list of human #H5N1 cases: US - Humans with full or partial test positive #H5N1 results list (CDC + states + seropositive + assay positive) - https://flutrackers.com/forum/forum/united-states/h5n1-tracking-af/991361-us-humans-with-full-or-partial-test-positive-h5n1-results-list-cdc-states-seropositive-assay-positive…
FluTrackers.com
@FluTrackers
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20m
Here is direct link to USDA HPAI Confirmed Cases in Livestock - Last Modified: January 16, 2025 - 974 herds: https://aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/hpai-confirmed-cases-livestock… #H5N1
FluTrackers.com
@FluTrackers
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22m
Here is direct link to poultry (only) outbreaks: USDA - Confirmations of Highly Pathogenic Avian Influenza in Commercial and Backyard Flocks - last detection Feb. 14, 2025 https://aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/commercial-backyard-flocks…… #H5N1
(edit: Here is the link that is working. Use this: https://www.aphis.usda.gov/livestock...ackyard-flocks)
FluTrackers.com
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39m
Here is direct link for those who asked - mammals only (not including herds or humans): USDA - Detections of Highly Pathogenic Avian Influenza in Mammals - Last Modified: February 19, 2025 - 503 entries since 2022 https://aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/mammals… #H5N1
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Translation Google
Bird flu: French vaccination strategy inspires abroad
Paris (AFP) – Faced with bird flu, France has decided to make vaccination of duck farms mandatory from 2023, despite the commercial risks. But the strategy is paying off and is now inspiring people abroad.
Published on:24/02/2025 - 17:51
The two years preceding vaccination were tragic: 1,800 outbreaks of highly pathogenic avian influenza (HPAI) detected and 32 million poultry slaughtered in France. Since then, it has been a breath of fresh air: only around thirty outbreaks in two seasons and a poultry sector that is returning to its pre-crisis production.
"It was a courageous decision" which paid off because "our studies showed that 700 outbreaks were avoided thanks to vaccination", co-financed by the government, explained Muriel Vayssier-Taussat, head of the animal health department of the National Institute for Agronomic and Environmental Research (INRAE), during the 61st Paris Agricultural Show.
Meanwhile, in the United States, the epizootic is decimating poultry by the tens of millions, causing the price of eggs to explode, to the point that this sector, previously reluctant to vaccinate, has changed its position, citing the French example.
But chicken producers in the country, the world's second-largest exporter, are holding back, saying some may close their borders to American poultry over fears that vaccination will mask the presence of the virus.
On the first day of vaccination in France, the United States and Canada had imposed an embargo on French poultry products, before lifting it in January, convinced by France "of the safety of vaccination", according to the ministry.
The French exception
In the United Kingdom, where around thirty outbreaks have been detected, several agricultural organisations have called on the government to lift the ban on poultry vaccination.
The European Union authorises it but only France has generalised it and only for ducks, the source of many of the contaminations.
In January, the French health authorities - human and animal - and all livestock sectors called for better anticipation on a European scale, since the migration of wild birds, which spread the virus, does not respect borders.
Avian influenza A (H5N1) appeared in 1996 in China, which communicates little on its epizootic monitoring, specifies INRAE. The country, like others in Asia, has been vaccinating for years but hardly exports, largely consuming its production.
Since 2020, the number of outbreaks has jumped worldwide, among birds and mammals, and in areas previously unaffected, such as Antarctica.
In the United States, it has been attacking cattle farms for almost a year, with cases of transmission to humans. A first death was recorded there and nearly 70 people were contaminated, a figure that could be underestimated due to limited screening.
"Hallucinated"
"The virus mutates very quickly and has a broad spectrum of host species," explains Muriel Vayssier-Taussat. Its adaptation to the mammary gland of cattle was "a surprise" since it usually affects the respiratory tract.
Researchers from INRAE and the University of Quebec have developed a new vaccine formulation against different strains of the virus. Tests on chickens have shown total protection against infection but also against transmission of the virus.
This "universal" vaccine candidate has been patented and negotiations are underway with manufacturers to carry out trials on other animal species and launch production, with particular interest from North America, notes Muriel Vayssier-Taussat.
...
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Flutrackers List of Human cases, I've added those diagnosed with D.1.1 in red.
Excerpt:
2025
93) United States - Female, adult, hospitalized, backyard poultry flock, Platte county, Wyoming. D.1.1. February 14.
90 - 92) United States - 3 persons - "Among 150 bovine veterinary practitioners, three had evidence of recent infection with HPAI A(H5) virus, including one who only practiced in two states (Georgia and South Carolina) with no known HPAI A(H5) virus infection in cattle and no reported human cases (1,2); this practitioner reported no exposures to animals with known or suspected HPAI A(H5) virus infections." September 2024 but revealed February 2025. 1 person is unknown exposure, 2 persons probably cattle exposure.
89) United States - Male, adult, poultry worker, Mercer county, hospitalized & released. Ohio. February 12
88) United States - A dairy cattle worker in Churchill, Nevada, mild. D.1.1 Confirmed February 10
87) United States - Child, recovered, no known exposure, San Francisco, California. January 10
Please see Flutrackers Global H5N1 Human Cases List. https://flutrackers.com/forum/forum/...man-cases-list
Comment
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February 26, 2025
Bird Flu Hits US: 2 Hospitalized as H5N1 Spreads Concern
As bird flu cases rise, experts warn of possible risks from seasonal flu reassortment
Excerpt:
The Growing Threat of H5N1
The recent cases of bird flu in Wyoming and Ohio serve as a stark reminder that the H5N1 virus remains a serious threat to public health, particularly for those who work with poultry or have close contact with infected animals. While the risk of human-to-human transmission remains low, the potential for reassortment with seasonal flu strains and the rapid spread of the virus in animal populations should not be underestimated. As the CDC and other public health agencies continue to monitor the situation, it is crucial for the public to stay informed and take necessary precautions to prevent the spread of this dangerous virus. The next few months will likely be critical in determining how this outbreak progresses and whether it leads to a larger, more concerning public health crisis.
Comment
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more full disclosure....
From:
"FluTrackers" <flutrackers@earthlink.net>
To: REDACTED
Subject: from Sharon at FluTrackers
Date: Feb 26, 2025 3:44 PM
Hey REDACTED -
I do not have any solid info about any new spillover.....but really....probability says it has to be happening....nature is nature....too many animals - of all kinds - in too many locations to count....all mixing it up at shared food and water sources - including at poultry and dairy cattle farms...
We think the animal situation is completely out of control.
Now at live bird markets in large US cities? What could go wrong? Much of the H7N9 avian flu outbreak in China was spread via live markets.....the formite risk is astronomical. And they only close them down for cleaning and then I believe they open them again. So bad for human health, reassort opportunities abound, children are at table level....right into their noses and mouths....
Sorry for the rant....unless H5N1 decides to burn out....we are in for some trouble I think. It is mathematics now.....
Comment
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Links for the above reply email:
New Jersey poultry market - Union county, close to NYC, population is about 500k
New York poultry markets - New York city
Pennsylvania poultry market - Philadelphia
China H7N9 forum -
Comment
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H5 Highly Pathogenic Avian Influenza Confirmed in New Jersey Cat
For Release:
February 28, 2025
[bollding is mine]
H5 Highly Pathogenic Avian Influenza Confirmed in New Jersey Cat
For Release:
February 28, 2025
Caution Advised Though H5N1 Public Health Risk to Humans Remains Low
TRENTON, NJ - The first feline case of H5 Highly Pathogenic Avian Influenza (HPAI or “bird flu”) in New Jersey has been confirmed in a feral cat from Hunterdon County. The case was confirmed by the United States Department of Agriculture (USDA) National Veterinary Services Laboratory, and follows previous national reports of confirmed feline cases in other states.
The cat developed severe disease, including neurologic signs, and was humanely euthanized. Other cats on the same property were also reported ill, and one additional indoor-outdoor cat was subsequently confirmed positive for H5 HPAI. Other tests are still pending, and the investigation is ongoing.
The overall public health risk remains low at this time. While H5 HPAI has been detected in humans in the U.S. – primarily in individuals with close contact with infected poultry or dairy cattle – there have been no human cases reported in New Jersey, and none of the cases across the country are known to have resulted from exposure to an infected cat.
Local health officials are working closely with the New Jersey Department of Health in conducting follow up and symptom monitoring on individuals that have been in contact with these cats. All exposed individuals are currently asymptomatic. Residents who have had close, unprotected contact with a cat or other animal infected with H5 HPAI should contact their local health department and monitor themselves for symptoms for 10 days following their last exposure.
“While the risk of H5 infection to the general population remains low at this time, it is important for people to learn more about the situation and take steps to avoid potential infection through exposure to animals, including feral cats,” said New Jersey Health Commissioner Kaitlan Baston, MD, MSc, DFASAM. “We continue to work with state and federal partners to monitor the spread of this virus and provide public information on mitigating the risks.”
Cats are particularly susceptible to H5 HPAI and often experience severe disease and high mortality when infected. Potential exposure sources of H5 HPAI for cats include consuming raw (unpasteurized) milk or raw/undercooked meat contaminated with the virus, infected birds or other animals and their environments, or exposure to contaminated clothing or items (fomites) worn or used on affected premises.
The cats tied to this incident in Hunterdon County had no known reported exposures to infected poultry, livestock, or consumption of raw (unpasteurized) milk or meat, but did roam freely outdoors, so exposure to wild birds or other animals is unknown.
Continued: https://www.nj.gov/health/news/2025/...0250228a.shtmlComment
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Media
Some of NYC’s 500K stray cats could be infected with bird flu — possibly threatening humans: activists
Published Feb. 21, 2025
The deadly bird flu may have already infected at least some of the half-million stray cats roaming the Big Apple, animal activists warn — a troubling scenario that could threaten humans, too.
There have not yet been any confirmed cases of felines contracting the H5N1 virus ravaging the country’s fowl populations, but some animal advocates are saying the jump from birds to cats is inevitable — and may have already occurred in New York City.
“I do believe at some point, cats are going to pick a bird that’s infected. It’s just a matter of time,” said Regina Massaro, the founder of Spay Neuter Intervention Project NYC, to The Post.
continued: https://nypost.com/2025/02/21/us-new...ans-activists/Comment
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FluTrackers.com
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Now
US -USDA reports 2 live markets with #H5N1 in Queens,New
York City https://flutrackers.com/forum/forum/united-states/h5n1-tracking-af/new-york/1005301-new-york-avian-flu-in-poultry-2025?p=1009061#post1009061… h/t Pathfinder
@nycHealthy
Protocol should be to clean&shut them down
indefinitely. Obviously existing procedures are not working. Call
@WHO to ask about avian flu & live market outbreaks.
Comment
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