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Colorado - Bird flu in mammals and livestock 2023-2026

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https://wahis.woah.org/#/in-review/4451
 
Colorado now has the worst outbreak of bird flu among dairy cattle in the country

The state has seen nearly one-quarter of its herds affected, most in the past month

John Ingold
3:38 AM MDT on Jul 2, 2024
...
As of Monday evening, Colorado had identified 26 herds with cases of avian influenza. Of those, 22 were identified within the past month and the herds are still in quarantine. Four other cases were identified earlier and quarantines have since been lifted.

All affected herds are in the northeastern part of the state.
...
Dr. Maggie Baldwin, the state veterinarian, said Colorado agriculture and health officials are working closely with dairies to identify cases of the virus and to try to prevent its spread.

“This is just a virus that likes to hang around,” she said. “It’s really hard to mitigate once it’s in a sustained population. …
...
Baldwin said some of the affected cattle in Colorado are in what are known as “closed herds” — meaning there is no movement of cattle in and out, making it impossible for the virus to have spread to that herd through the introduction of an infected cow. U.S. agriculture officials found something similar with several herds in Michigan.

Focus has now turned to the potential for what is called fomite transmission...
...
Following federal guidance, the state is only testing people who have flu-like symptoms. Scott Bookman, the Colorado Department of Public Health and Environment’s senior director for public health readiness and response, said the state has tested fewer than a dozen people. All those tests have come back negative.
...

https://coloradosun.com/2024/07/02/colorado-bird-flu-dairy-cattle/
 
...
Colorado Cases of HPAI in Dairy Cattle [TABLE="cellpadding: 0, cellspacing: 0"]
[TR]
[TD="colspan: 3"]Colorado Dairy HPAI Cases[/TD]
[/TR]
[TR]
[/TR]
[TR]
[TD]Dairy No[/TD]
[TD]Date Confirmed Positive[/TD]
[TD]Current Status[/TD]
[/TR]
[TR]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[/TR]
[TR]
[TD]CO 001[/TD]
[TD]4/25/24[/TD]
[TD]Quarantine Released[/TD]
[/TR]
[TR]
[TD]CO 002[/TD]
[TD]5/8/24[/TD]
[TD]Quarantine Released[/TD]
[/TR]
[TR]
[TD]CO 003[/TD]
[TD]5/22/24[/TD]
[TD]Quarantine Released[/TD]
[/TR]
[TR]
[TD]CO 004[/TD]
[TD]5/22/24[/TD]
[TD]Quarantine Released[/TD]
[/TR]
[TR]
[TD]CO 005[/TD]
[TD]6/10/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 006[/TD]
[TD]6/12/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 007[/TD]
[TD]6/13/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 008[/TD]
[TD]6/13/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 009[/TD]
[TD]6/13/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 010[/TD]
[TD]6/14/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 011[/TD]
[TD]6/18/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 012[/TD]
[TD]6/18/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 013[/TD]
[TD]6/21/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 014[/TD]
[TD]6/21/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 015[/TD]
[TD]6/21/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 016[/TD]
[TD]6/21/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 017[/TD]
[TD]6/28/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 018[/TD]
[TD]6/21/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 019[/TD]
[TD]6/20/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 020[/TD]
[TD]6/24/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 021[/TD]
[TD]6/24/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 022[/TD]
[TD]6/25/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 023[/TD]
[TD]6/25/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 024[/TD]
[TD]6/28/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 025[/TD]
[TD]6/28/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 026[/TD]
[TD]6/28/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD]CO 027[/TD]
[TD]7/1/24[/TD]
[TD]Under Quarantine[/TD]
[/TR]
[TR]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[/TR]
[TR]
[TD="colspan: 3"]Last Updated: 07/02/2024[/TD]
[/TR]
[/TABLE]


https://ag.colorado.gov/animals/reportable-diseases/avian-influenza/hpai-in-dairy-cattle
 
from the article:
"“Where we need to ramp up the level of concern in the population is when we see those dairy farm workers get infected and spread it to their families,” she said.

Still, she said, now is the time for public health agencies to make sure their testing and disease-monitoring systems are running smoothly, so that they can detect if the current bird flu outbreaks in livestock evolve into a threat to humans.

“As a general person right now, I don’t think the level of concern should be that high,” she said. “But for public health, for people working in the field of infectious disease, this is exactly what we need to be working on right now.”
 
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