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Highly pathogenic avian influenza,
United States of America
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[TD="class: topbigtabletitle27"]Information received on 07/01/2015 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America[/TD]
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Summary [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th, width: 10%"]Report type[/TD]
[TD="width: 30%"]Follow-up report No. 1[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of start of the event[/TD]
[TD="width: 30%"]10/12/2014[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of pre-confirmation of the event[/TD]
[TD="width: 30%"]15/12/2014[/TD]
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[TD="class: filtrer_th, width: 10%"]Report date[/TD]
[TD="width: 30%"]07/01/2015[/TD]
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[TD="class: filtrer_th, width: 10%"]Date submitted to OIE[/TD]
[TD="width: 30%"]07/01/2015[/TD]
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[TD="class: filtrer_th, width: 10%"]Reason for notification[/TD]
[TD="width: 30%"]Reoccurrence of a listed disease[/TD]
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[TD="class: filtrer_th, width: 10%"]Date of previous occurrence[/TD]
[TD="width: 30%"]2004[/TD]
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[TD="class: filtrer_th, width: 10%"]Manifestation of disease[/TD]
[TD="width: 30%"]Clinical disease[/TD]
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[TD="class: filtrer_th, width: 10%"]Causal agent[/TD]
[TD="width: 30%"]Highly pathogenic avian influenza virus[/TD]
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[TD="class: filtrer_th, width: 10%"]Serotype[/TD]
[TD="width: 30%"]H5N2[/TD]
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[TD="class: filtrer_th, width: 10%"]Nature of diagnosis[/TD]
[TD="width: 30%"]Laboratory (advanced)[/TD]
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[TD="class: filtrer_th, width: 10%"]This event pertains to[/TD]
[TD="width: 30%"]a defined zone within the country[/TD]
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[TD="class: filtrer_th ta_left, width: 10%"]Related reports[/TD]
[TD="width: 30%"]Immediate notification (16/12/2014)
Follow-up report No. 1 (07/01/2015)[/TD]
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New outbreaks (1)[/TD]
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Outbreak 1[/TD]
[TD="class: filtrer_th ta_left"]
Benton County, Benton, WASHINGTON[/TD]
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Date of start of the outbreak[/TD]
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24/12/2014[/TD]
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Outbreak status[/TD]
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Continuing (or date resolved not provided)[/TD]
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Epidemiological unit[/TD]
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Backyard[/TD]
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Affected animals[/TD]
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Species[/TD]
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Susceptible[/TD]
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Cases[/TD]
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Deaths[/TD]
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Destroyed[/TD]
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Slaughtered[/TD]
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Birds[/TD]
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178[/TD]
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37[/TD]
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37[/TD]
[TD="class: ta_right"]
141[/TD]
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0[/TD]
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Affected population[/TD]
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The affected premises is a small backyard mixed free-range flock of geese, turkeys, chickens, ducks, and pigeons that are allowed access to the outdoors and regularly exposed to wild migratory waterfowl.[/TD]
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Summary of outbreaks[/TD]
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Total outbreaks: 1[/TD]
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Total animals affected[/TD]
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[TD="class: filtrer_th ta_center last"]
Species[/TD]
[TD="class: filtrer_th ta_center last"]
Susceptible[/TD]
[TD="class: filtrer_th ta_center last"]
Cases[/TD]
[TD="class: filtrer_th ta_center last"]
Deaths[/TD]
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Destroyed[/TD]
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Slaughtered[/TD]
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Birds[/TD]
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178[/TD]
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37[/TD]
[TD="class: ta_right"]
37[/TD]
[TD="class: ta_right"]
141[/TD]
[TD="class: ta_right"]
0[/TD]
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Outbreak statistics[/TD]
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Species[/TD]
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Apparent morbidity rate[/TD]
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Apparent mortality rate[/TD]
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Apparent case fatality rate[/TD]
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Proportion susceptible animals lost*[/TD]
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Birds[/TD]
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20.79%[/TD]
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20.79%[/TD]
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100.00%[/TD]
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100.00%[/TD]
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*Removed from the susceptible population through death, destruction and/or slaughter[/TD]
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Epidemiology [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th ta_left"]Source of the outbreak(s) or origin of infection[/TD]
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- Contact with wild species
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[TD="class: filtrer_th ta_left"]Epidemiological comments[/TD]
[TD]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 in response to the HPAI H5N2 wild bird related event. The USDA APHIS National Veterinary Services Laboratory (NVSL) confirmed avian influenza virus (AIV) H5N2 in a backyard mixed flock. Preliminary results indicate that the H5N2 identified is 99% similar to the recent H5N2 isolated from the Northern pintail duck. Epidemiological investigation of backyard AIV infected premises as of 6 January 2015: • Two high risk epidemiologically linked contact backyard premises have been identified and placed under quarantine. Biological sampling for AIV has been completed and results are pending. • Enhanced surveillance in a 10 km radius has been implemented. The HPAI H5N2 virus has NOT been found in commercial poultry anywhere in the United States.[/TD]
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Control measures [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th ta_left"]Measures applied[/TD]
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- Stamping out
- Quarantine
- Movement control inside the country
- Vaccination prohibited
- No treatment of affected animals
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[TD="class: filtrer_th ta_left"]Measures to be applied[/TD]
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- Disinfection of infected premises/establishment(s)
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Diagnostic test results [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer_th ta_left"]Laboratory name and type[/TD]
[TD="class: filtrer_th ta_left"]Species[/TD]
[TD="class: filtrer_th ta_left"]Test[/TD]
[TD="class: filtrer_th ta_left"]Test date[/TD]
[TD="class: filtrer_th ta_left last"]Result[/TD]
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[TD="class: filtrer"]National Veterinary Services Laboratory (NVSL) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)[/TD]
[TD="class: filtrer"]03/01/2015[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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[TD="class: filtrer"]National Veterinary Services Laboratory (NVSL) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]virus isolation[/TD]
[TD="class: filtrer"] [/TD]
[TD="class: filtrer cb-centree last"]Pending[/TD]
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[TD="class: filtrer"]National Veterinary Services Laboratory (NVSL) (National laboratory)[/TD]
[TD="class: filtrer"]Birds[/TD]
[TD="class: filtrer"]virus sequencing[/TD]
[TD="class: filtrer"]03/01/2015[/TD]
[TD="class: filtrer cb-centree last"]Positive[/TD]
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Future Reporting [TABLE="class: TableFoyers, width: 917"]
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[TD="class: filtrer"]The event is continuing. Weekly follow-up reports will be submitted.[/TD]
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| Map of outbreak locations |
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http://www.oie.int/wahis_2/public/wa...reportid=16914