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PostPosted: Wed Jan 21, 2015 5:01 am 

Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
niman wrote:
Idaho Department of Agriculture cites H5N2 in 3 dead pet falcons fed wild bird in Canyon County.
http://www.agri.idaho.gov/Categories/Ne ... 150120.pdf

http://fishandgame.idaho.gov/public/med ... ewsID=7470


PostPosted: Wed Jan 21, 2015 11:30 pm 

Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
SDA confirms high-path H5N1 in Washington state

Jim Wappes | Editorial Director | CIDRAP News | Jan 21, 2015

Green-winged teal
Winston Wong/ Flickr cc
Increased wild bird surveillance turned up the new virus in the hunter-killed duck.
In an apparent first, highly pathogenic avian influenza (HPAI) H5N1 has been detected in a US bird, in Washington state, according to a report filed by John Clifford, DVM, deputy administrator with the Animal and Plant Health Inspection Service of the US Department of Agriculture (USDA).

The report, posted yesterday by the World Organization for Animal Health (OIE), details a novel H5N1 virus found in a wild green-winged teal in Whatcom County that resulted from reassortment between a Eurasian (EA)-type H5N8 virus and North American avian influenza strains.

The virus was detected in a hunter-killed bird as part of increased avian flu surveillance in wild birds, according to the report. Whole-genome sequencing placed it in EA H5 clade

Its PB2, H5, NP, and MP components are more than 99% identical to the HPAI H5N8 strain found in a wild gyrfalcon in the same county in December. It also contains PB1 genes that are 98% identical to those in a HPAI H5N2 found in a northern pintail duck, also in Whatcom County in December, as well as PA, N1, and NS components from a North American low-pathogenic wild bird lineage.

"Such findings are not unexpected as the EA-H5N8 virus continues to circulate," the report states. It concludes that the new H5N1 reassortant virus "has NOT been found in commercial poultry anywhere in the United States."

Information on the USDA Web site says that HPAI H5N1 has not been previously detected in the United States, but the OIE report lists 2004 as the date of a previous occurrence of the disease. That might, however, refer to the detection of HPAI H5N2 in Texas that year, or to a low-path avian flu outbreak. A phone call to Clifford's office could not immediately clarify the details.

H5N2, H5N8 in Idaho
In related news, the Idaho State Department of Agriculture (ISDA) said in a news release yesterday that HPAI H5N2 has been detected in a backyard poultry flock in that state, as well as in domestic falcons. In addition, HPAI H5N8 has been detected in wild birds in the state, the agency said.

The outbreak in the backyard flock was first reported by the media on Jan 19. The detections of both strains were the result of increased surveillance, the ISDA said.

The three affected falcons and the unspecified number of poultry are both in Canyon County in southwestern Idaho, and the H5N8-positive ducks were sampled in Gooding County south central Idaho.

"Both the H5N8 and H5N2 strains of HPAI confirmed in Idaho have previously been identified in incidents in backyard domestic poultry and wild fowl in other northwestern states. It is critical that backyard flock owners and poultry producers take every opportunity to prevent contact between domestic birds and the wild waterfowl that carry the avian influenza virus," Bill Barton, DVM, ISDA state veterinarian, said in the release.

See also:

Jan 20 OIE report

Jan 20 IDSA news release

Jan 20 USDA update on recent H5N2 and H5N8 detections

CIDRAP overview on avian flu in birds

http://www.cidrap.umn.edu/news-perspect ... gton-state


PostPosted: Sat Jan 24, 2015 2:24 pm 

Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
January 21, 2015
Dear Falconer,
As you may be aware, two different strains of avian influenza viruses were detected from birds in
Washington in mid-December 2014. An H5N2 virus was isolated from one wild Northern Pintail duck and
an H5N8 virus was isolated from one captive Gyrfalcon, a falconer’s bird which was fed wild waterfowl
meat. Both viruses were identified as highly pathogenic due to their ability to cause high mortality in
domestic poultry. Both H5N2 and H5N8 viruses have been found in other parts of the world and have
not caused any human infection to date.
Subsequent detections of H5N8 have been made in a backyard poultry flock in Oregon and apparently
healthy hunter-harvested wild ducks in California and Utah. In addition, Idaho Fish and Game released
information to falconers in that state regarding the deaths of three captive peregrine falcons from an
avian influenza virus after feeding on a wild duck. Because avian influenza viruses naturally circulate in
waterfowl and shorebirds, the California Department of Fish and Wildlife is recommending that
falconers in California avoid hunting of wild water birds. We currently do not know the full extent or
distribution of these viruses, but surveillance is ongoing in California, and surrounding states.
As part of the surveillance effort, the California Animal Health and Food Safety Laboratories in
partnership with the California Department of Food and Agriculture provide testing for disease
surveillance and management of backyard poultry and pet birds through their Avian Health Program.
This program was recently expanded to provide complimentary avian influenza testing for falconer’s
birds that show signs of illness or die suddenly; owners are responsible for additional charges if a full
necropsy is desired.
If you observe signs of illness or increased mortality in your captive birds, please call the Sick Bird
Hotline at 1-866-922-2473. To report wild bird mortality contact the California Department of Fish and
Wildlife’s Wildlife Investigations Laboratory at 1-916-358-2790 or online at:
https://www.wildlife.ca.gov/Conservatio ... lityReport
Krysta Rogers Carie Battistone
Environmental Scientist Sr. Environmental Scientist
Avian Mortality Investigations Statewide Raptor Coordinator
Wildlife Investigations Laboratory California Department of Fish & Wildlife
California Department of Fish & Wildlife Office 916-445-3615
Office 916-358-1662 Carie.Battistone@wildlife.ca.gov

https://nrm.dfg.ca.gov/FileHandler.ashx ... 119&inline


PostPosted: Mon Feb 09, 2015 12:22 pm 

Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
Bird Flu Flew To Idaho With Migratory Birds

This map shows recent, documented cases of avian influenza and the overlap of the Pacific and East Asian-Australasian Flyways.

The U.S. Department of Agriculture says the avian influenza found in a flock of chickens in Parma last month, came to Idaho from Southeast Asia.

Idaho’s state veterinarian, Bill Barton, says the sickness was likely carried here by wild waterfowl like ducks and geese. Avian influenza is fairly common in wild birds. While Barton says they have a high tolerance for it's often lethal in domestic poultry. So far, no bird flu strain that has been found in Idaho is harmful to people.

“With the migratory routes of wild birds in Asia, and then the migratory routes from Asia over to the U.S, there’s a lot of co-mingling of birds,” Barton says. “Among poultry and wild birds, avian influenza is easy to pass from one bird to another.”

Barton says bird flu is most commonly transmitted through feces. A migrating bird could easily get the virus by stepping in its Asian neighbor’s waste and later pass it to an Idaho chicken through its own.

He says the strain of bird flu found in Idaho likely came down what’s known as the 'Pacific Flyway'. That’s a migratory path from the Arctic, down through the western U.S. and beyond.

Jeff Knetter, Idaho Fish and Game’s top bird expert, says that means there are a lot of suspects for who could have brought bird flu to Idaho.

“There are a variety of species that sort of co-mingle along the Bering Strait, northern Alaska or even northern Russia," he says. "Those could be snow geese, they could be northern pintail, mallards, green winged teal species, American wigeon - all species that you can see in the Treasure Valley.”

In Alaska and Russia, the Pacific Flyway overlaps with another huge migration route, the East Asian – Australasian Flyway. So Birds that winter in Cambodia might roost next to birds that winter in California and pass through Parma during their travels.

Knetter says researchers know of one group of snow geese that breeds on Russia’s Wrangle Island, winters in California’s Central Valley and stops in southwest Idaho on its way north. He says there are between 50,000 and 60,000 snow geese and 30,000 to 40,000 greater white fronted geese that pass through southwestern Idaho each year.

Knetter says 10 to 15 years ago, neither of these species passed through this part of the state. But their migration patterns have changed. And, even though these geese are coming through in large numbers now, Knetter says you may not have noticed them. They tend to steer clear of urban areas, unlike the Canada geese found all over the Boise area.

Find Adam Cotterell on Twitter @cotterelladam

http://boisestatepublicradio.org/post/b ... tory-birds


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