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Bhutan - 1 outbreak of highly pathogenic avian influenza H5N1 in backyard birds, Thimphu (OIE, April 16, 2015)

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  • Bhutan - 1 outbreak of highly pathogenic avian influenza H5N1 in backyard birds, Thimphu (OIE, April 16, 2015)

    Highly pathogenic avian influenza,
    Bhutan
    Information received on 16/04/2015 from Dr Tashi Samdup, Director, Department of Livestock, Ministry of Agriculture and Forests, Thimphu, Bhutan
    Summary
    Report type Immediate notification
    Date of start of the event 03/04/2015
    Date of confirmation of the event 06/04/2015
    Report date 16/04/2015
    Date submitted to OIE 16/04/2015
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 17/04/2013
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic avian influenza virus
    Serotype H5N1
    Nature of diagnosis Laboratory (advanced), Necropsy
    This event pertains to a defined zone within the country
    New outbreaks (1)
    Outbreak 1 Motithang City Camp, Thimphu Thromde, THIMPHU
    Date of start of the outbreak 03/04/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 37 16 16 21 0
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 37 16 16 21 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 43.24% 43.24% 100.00% 100.00%
    *Removed from the susceptible population through death, destruction and/or slaughter
    Epidemiology
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Epidemiological comments The outbreak has occurred in a backyard, free-ranging poultry population. While interviewing the owners of the birds, none of the mentioned source of infection could be ascertained. Further investigation on the source of infection will be followed-up. A host-pathogen interaction particularly in this case would be potential research topic. Only a small number of birds in an isolated pocket was affected. No further infection in flocks in close proximity was detected.
    Control measures
    Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • Disinfection of infected premises/establishment(s)
    • Dipping / Spraying
    • 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 Centre for Animal Health, Serbithang, Thimphu (National laboratory) Birds real-time PCR 06/04/2015 Positive
    National Institute of High Security Animal Diseases (NIHSAD), Bhopal, India (OIE’s Reference Laboratory) Birds real-time PCR 14/04/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../
    http://www.oie.int/wahis_2/public/wa...reportid=17533
    "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
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