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PostPosted: Fri Jan 23, 2015 1:00 pm 
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Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
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. 4
Date of start of the event 10/12/2014
Date of pre-confirmation of the event 14/12/2014
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
Serotype H5N8
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 (19/12/2014)
Follow-up report No. 2 (29/12/2014)
Follow-up report No. 3 (07/01/2015)
Follow-up report No. 4 (22/01/2015)
New outbreaks (4)
Outbreak 1 Butte County, Butte, CALIFORNIA
Date of start of the outbreak 02/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Gadwall:Anas strepera(Anatidae)
Affected population Hunter harvested wild gadwall duck
Outbreak 2 Yolo county, Yolo, CALIFORNIA
Date of start of the outbreak 09/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Green-winged Teal:Anas carolinensis(Anatidae)
Affected population Hunter harvested wild American green-winged teal duck.
Outbreak 3 Davis County, Davis, UTAH
Date of start of the outbreak 09/01/2015
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
American wigeon:Anas americana(Anatidae)
Affected population Hunter harvested wild American wigeon duck.
Outbreak 4 Gooding County, Gooding, IDAHO
Date of start of the outbreak 16/01/2015
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: 4
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Gadwall:Anas strepera(Anatidae) **
Green-winged Teal:Anas carolinensis(Anatidae) **
American wigeon:Anas americana(Anatidae) **
Mallard:Anas platyrhynchos(Anatidae) **
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Gadwall:Anas strepera(Anatidae) ** ** ** **
Green-winged Teal:Anas carolinensis(Anatidae) ** ** ** **
American wigeon:Anas americana(Anatidae) ** ** ** **
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 H5N8 wild bird related event. 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. As part of the increased AI surveillance of wild birds (performed by testing hunter harvested birds), H5N8 with an amino acid sequence at the HA cleavage site that is consistent with highly pathogenic avian influenza has been identified in wild ducks in the Pacific flyway. HA and NA sequence fragments from these viruses, and the virus from the backyard finding, are essentially identical to that found in the reported gyrfalcon. Update on the Oregon backyard premises as of 17 January 2015: • A 10 km active surveillance zone was initiated for avian influenza. o All surveillance and testing has been negative for AI. The HPAI EA-H5N8 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) American wigeon real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 09/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Gadwall real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 02/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Gadwall virus sequencing 02/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Green-winged Teal real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 09/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Green-winged Teal virus sequencing 09/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Mallard real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/01/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Mallard virus sequencing 16/01/2015 Positive
NationalVeterinary Services Laboratories (NVSL) (National laboratory) American wigeon virus sequencing 09/01/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.

http://www.oie.int/wahis_2/public/wahid ... rtid=17031

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PostPosted: Sun Feb 15, 2015 2:04 am 
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Joined: Wed Aug 19, 2009 10:42 am
Posts: 56044
Location: Pittsburgh, PA USA
SALT LAKE CITY — Avian bird influenza has made its way to Utah, and veterinarians said you don’t want it getting to your backyard birds.

Warren Hess, acting state veterinarian for the Utah Department of Agriculture and Food, said the deadly avian bird flu has been making its way along the West Coast of the United States. He said the virus hits with little warning.

“The most common symptom for avian influenza, unfortunately, is sudden death,” he said.

Hess said the flu is most often transferred by waterfowl, which can carry the virus but aren’t susceptible to symptoms.

“So you’re not seeing sick waterfowl, you’re seeing normal, healthy waterfowl walking around spreading this virus,” Hess said.

Hess said it’s important for people to keep poultry away from backyard ponds where waterfowl might be. He said a sturdy, high fence around chickens can help prevent them from interacting with birds that might be carrying the virus.

Hess said people like chicken-owner Shaun Meadows are doing a good job of protecting their birds.

“The other thing I really like about his set up, is that he’s got this chicken coop here that’s got an overhang on it,” Hess said. “That, if he needed to, he could corral his birds inside, or at least under the overhang, if he had a problem with wild birds coming into his yard.”

“I’m glad that everything’s right where it needs to be, and I’m glad I learned a little bit more too on the signs of the flu,” Meadows said.

There have been multiple cases in states like California and Oregon, but so far there has only been one known case of the avian flu in Utah—a hunted duck that tested positive for avian influenza.

But the Department of Agriculture and Food said they need to know if the virus pops up anywhere else, as it could be devastating to our state’s large poultry industry.

“Once it gets into a poultry production, there’s nothing you can do to treat them,” Hess said. “They have to be depopulated and cleaned out.”

Hess said if it came to that, they have procedures.

“Every bird would be humanely euthanized and removed, and the house would be cleaned and sanitized and disinfected,” he said.

Hess said the risk to humans isn’t great.

“Avian influenza can occasionally be transmitted from birds to humans and cause a problem,” he said. “The particular viruses that we’ve identified so far this year are not crossing that barrier into humans.”

Anyone who thinks their backyard flock has been infected with avian influenza is asked to call the Utah Department of Agriculture at 801-538-7100.

http://fox13now.com/2015/02/14/utah-off ... ard-birds/

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