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Estados Unidos - 24 nuevos brotes de alta patogenicidad H5N2 de la gripe aviar en aves (OIE 24 de abril de 2015)

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  • Estados Unidos - 24 nuevos brotes de alta patogenicidad H5N2 de la gripe aviar en aves (OIE 24 de abril de 2015)

    Highly pathogenic avian influenza,
    United States of America
    Information received on 24/04/2015 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. 13
    Date of start of the event 10/12/2014
    Date of confirmation of the event 15/12/2014
    Report date 24/04/2015
    Date submitted to OIE 24/04/2015
    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)
    Follow-up report No. 4 (03/02/2015)
    Follow-up report No. 5 (17/02/2015)
    Follow-up report No. 6 (24/02/2015)
    Follow-up report No. 7 (06/03/2015)
    Follow-up report No. 8 (12/03/2015)
    Follow-up report No. 9 (20/03/2015)
    Follow-up report No. 10 (31/03/2015)
    Follow-up report No. 11 (08/04/2015)
    Follow-up report No. 12 (15/04/2015)
    Follow-up report No. 13 (24/04/2015)
    New outbreaks (24)
    Outbreak 1 (78) Juneau County, Juneau, WISCONSIN
    Date of start of the outbreak 08/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 33 33
    Affected population The affected premises was a small backyard mixed flock of ducks and chickens that were allowed access to the outdoors.
    Outbreak 2 (59) Swift County, Swift, MINNESOTA
    Date of start of the outbreak 10/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 160000 160000
    Affected population A commercial turkey flock.
    Outbreak 3 (60) Stearns County 5, Stearns, MINNESOTA
    Date of start of the outbreak 10/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 76000 76000
    Affected population A commercial turkey flock.
    Outbreak 4 (58) Le Sueur County, Le Sueur, MINNESOTA
    Date of start of the outbreak 10/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 21500 21500
    Affected population A commercial turkey flock.
    Outbreak 5 (65) Meeker County 3, Meeker, MINNESOTA
    Date of start of the outbreak 10/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 20000 20000
    Affected population A commercial turkey flock.
    Outbreak 6 (56) St. Charles County, St. Charles, MISSOURI
    Date of start of the outbreak 10/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Not applicable
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Snow Goose:Anser caerulescens(Anatidae)
    Affected population Wild bird surveillance.
    Outbreak 7 (63) Meeker County 2, Meeker, MINNESOTA
    Date of start of the outbreak 11/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 25000
    Affected population A commercial turkey flock.
    Outbreak 8 (61) Swift County 2, Swift, MINNESOTA
    Date of start of the outbreak 11/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 154000 154000
    Affected population A commercial turkey flock.
    Outbreak 9 (62) Redwood County, Redwood, MINNESOTA
    Date of start of the outbreak 11/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 56000 56000
    Affected population A commercial turkey flock.
    Outbreak 10 (75) Buena Vista County, Buena Vistaa, IOWA
    Date of start of the outbreak 12/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 27000 27000
    Affected population A commercial turkey flock.
    Outbreak 11 (76) Roberts County, Roberts, SOUTH DAKOTA
    Date of start of the outbreak 12/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 69000 69000
    Affected population A commercial turkey flock.
    Outbreak 12 (64) Kandiyohi County 4, Kandiyohi, MINNESOTA
    Date of start of the outbreak 12/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 30000 30000
    Affected population A commercial turkey flock.
    Outbreak 13 (66) Otter Tail County, Otter Tail, MINNESOTA
    Date of start of the outbreak 13/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 21000
    Affected population A commercial turkey flock.
    Outbreak 14 (67) Stearns County 6, Stearns, MINNESOTA
    Date of start of the outbreak 13/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 67000 67000
    Affected population A commercial turkey flock.
    Outbreak 15 (69) Roseau County, Roseau, MINNESOTA
    Date of start of the outbreak 13/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 26000
    Affected population A commercial turkey flock.
    Outbreak 16 (68) Kandiyohi County 5, Kandiyohi, MINNESOTA
    Date of start of the outbreak 13/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 152000 152000
    Affected population A commercial turkey flock.
    Outbreak 17 (57) Barron County, Barron, WISCONSIN
    Date of start of the outbreak 14/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 126650 126650
    Affected population A commercial turkey flock.
    Outbreak 18 (70) Kandiyohi County 6, Kandiyohi, MINNESOTA
    Date of start of the outbreak 15/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 23000
    Affected population A commercial turkey flock.
    Outbreak 19 (77) Spink County, Spink, SOUTH DAKOTA
    Date of start of the outbreak 16/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 35100 35100
    Affected population A commercial turkey flock.
    Outbreak 20 (74) Cottonwood County 2, Cottonwood, MINNESOTA
    Date of start of the outbreak 16/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 30000
    Affected population A commercial turkey flock.
    Outbreak 21 (79) Osceola County, Osceolla, IOWA
    Date of start of the outbreak 16/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 4034000
    Affected population A commercial chicken table egg layer flock.
    Outbreak 22 (71) Kandiyohi County 8, Kandiyohi, MINNESOTA
    Date of start of the outbreak 16/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 9000
    Affected population A commercial turkey flock.
    Outbreak 23 (73) Wadena County, Wadena, MINNESOTA
    Date of start of the outbreak 16/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 301000
    Affected population A commercial turkey flock.
    Outbreak 24 (72) Kandiyohi County 9, Kandiyohi, MINNESOTA
    Date of start of the outbreak 17/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 61000
    Affected population A commercial turkey flock.
    Summary of outbreaks Total outbreaks: 24
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 5524283 ** 994283
    Snow Goose:Anser caerulescens(Anatidae) **
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** ** ** **
    Snow Goose:Anser caerulescens(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 and H5N2 wild bird related events. 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 the US. In addition, overlap of the Pacific, Central, and Mississippi Americas flyways has resulted in movement of the virus to the central part of the country. The EA-H5 clade 2.3.4.4 viruses are highly pathogenic for poultry.
    Control measures
    Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Zoning
    • 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) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 11/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 13/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 14/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 17/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 20/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 11/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 12/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 13/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 14/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 16/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 17/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 20/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Snow Goose real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 10/04/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Snow Goose virus sequencing 10/04/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../
    http://www.oie.int/wahis_2/public/wa...reportid=17593
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