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PostPosted: Wed Jan 21, 2015 5:02 am 
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niman wrote:
Idaho Department of Agriculture cites H5N2 in chicken backyard farm.

http://www.agri.idaho.gov/Categories/Ne ... 150120.pdf

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

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PostPosted: Wed Jan 21, 2015 11:30 pm 
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SDA confirms high-path H5N1 in Washington state

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

Image
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 2.3.4.4.

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

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PostPosted: Thu Jan 22, 2015 8:07 pm 
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Avian flu quarantine zone established around Parma infected-flock site
BY STATESMAN STAFF
newsroom@idahostatesman.comJanuary 22, 2015 Updated 1 hour ago

Image

Idaho agriculture officials have created a 6-mile avian influenza quarantine zone around the site near Parma where a flock of backyard chickens tested positive for avian flu virus.

Don't bring your chickens, eggs, poultry or poultry products to the part of Canyon County where avian influenza turned up in a flock of backyard chickens, says the Idaho State Department of Agriculture.

The department has created a quarantine zone, covering about six miles around the site near Parma where chickens tested positive in early January for H5N2, a highly pathogenic strain of avian flu.

"The quarantine restricts the movement of eggs, poultry or poultry products within and out of the identified zone with exemptions made for operations that obtain special permits and meet specific criteria," the department said in a news release.

The department said bird owners should protect their domestic birds from contact with wild waterfowl and "remain vigilant in their biosecurity measures," but reminded Idahoans there is no immediate public health threat from the virus.

Poultry meat and egg products remain safe to eat, as long as they're properly cooked.

http://www.idahostatesman.com/2015/01/2 ... ished.html?

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PostPosted: Fri Jan 23, 2015 12:54 pm 
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Highly pathogenic avian influenza,
United States of America

Information received on 22/01/2015 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
Summary
Report type Follow-up report No. 3
Date of start of the event 10/12/2014
Date of pre-confirmation of the event 15/12/2014
Report date 22/01/2015
Date submitted to OIE 22/01/2015
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 2004
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (16/12/2014)
Follow-up report No. 1 (07/01/2015)
Follow-up report No. 2 (13/01/2015)
Follow-up report No. 3 (22/01/2015)
New outbreaks (3)
Outbreak 1 Canyon County, Canyon, IDAHO
Date of start of the outbreak 07/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 26 4 4
Affected population The affected premises are a small backyard poultry flock of chickens and two ducks which are periodically allowed to range freely.
Outbreak 2 Clallam County, Clallam, WASHINGTON
Date of start of the outbreak 08/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 100 3 3 97
Affected population The affected premises are a small mixed free-range backyard flock of geese, ducks, and chickens that are allowed access to the outdoors and regularly exposed to wild migratory waterfowl.
Outbreak 3 Lane County, Lane, OREGON
Date of start of the outbreak 12/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Mallard:Anas platyrhynchos(Anatidae)
Affected population Hunter harvested wild mallard duck.
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 126 7 7 97
Mallard:Anas platyrhynchos(Anatidae) **
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 5.56% 5.56% 100.00% **
Mallard:Anas platyrhynchos(Anatidae) ** ** ** **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
Contact with wild species
Epidemiological comments The USDA Animal and Plant Health Inspection Service (APHIS), in conjunction with State Departments of Agriculture and Wildlife, are continuing to conduct a comprehensive epidemiological investigation and enhanced surveillance (including wild bird surveillance of hunter harvested birds) in response to the HPAI H5N2 wild bird related event. All backyard premises have been quarantined and enhanced active surveillance is being initiated in and around the backyard flocks Novel avian influenza virus of Eurasian origin (EA-H5N8 clade 2.3.4.4) spread rapidly along wild bird migratory pathways during 2014. Introduction of this EA-H5N8 virus into the Pacific Flyway sometime during 2014 has allowed mixing with North American (AM) lineage viruses and generated new combinations with genes from both EA and AM origin (or “reassortant” viruses) such as this EA/AM H5N2-reassortant detected in Canada and the US. These findings are not unexpected as the EA-H5N8 virus continues to circulate. The EA-H5 clade 2.3.4.4 viruses are highly pathogenic for poultry. The HPAI EA/AM H5N2-reassortant virus has NOT been found in commercial poultry anywhere in the United States.
Control measures
Measures applied
Stamping out
Quarantine
Movement control inside the country
Disinfection of infected premises/establishment(s)
Vaccination prohibited
No treatment of affected animals
Measures to be applied
No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Veterinary Services Laboratories (NVSL) (National laboratory) Mallard real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Mallard virus sequencing 12/01/2015 Positive
National Veterinary Services Laboratory (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/01/2015 Positive
National Veterinary Services Laboratory (NVSL) (National laboratory) Birds virus sequencing 16/01/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.

http://www.oie.int/wahis_2/public/wahid ... rtid=17030

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PostPosted: Mon Feb 09, 2015 12:38 pm 
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Bird Flu Flew To Idaho With Migratory Birds
By ADAM COTTERELL • 2 HOURS AGO

Image
This map shows recent, documented cases of avian influenza and the overlap of the Pacific and East Asian-Australasian Flyways.
USDA AND IOWA STATE UNIVERSITY

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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