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Vietnam reports outbreak of H5N1 bird flu in north - OIE

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  • Vietnam reports outbreak of H5N1 bird flu in north - OIE

    PARIS, July 12 (Reuters) - Vietnam has reported an outbreak of highly pathogenic H5N1 bird flu among backyard birds in the northern province of Ha Nam, the Paris-based World Organisation for Animal Health (OIE) said on Wednesday, citing a report from the Vietnamese farm ministry.
    The virus was detected at a backyard location with 1,135 birds. It directly killed 300 birds, with the rest of the flock slaughtered, the report said.
    The types of birds were not indicated and source of the disease not known.
    Vietnam is one of a number of countries in Asia, Europe and Africa to have seen bird flu viruses spread in recent months. Many strains only infect birds, but the H7N9 strain has notably led to human cases, including fatalities, in China.

  • #2
    Highly pathogenic avian influenza,
    Information received on 12/07/2017 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoď, Vietnam
    Report type Immediate notification
    Date of start of the event 04/07/2017
    Date of confirmation of the event 06/07/2017
    Report date 11/07/2017
    Date submitted to OIE 12/07/2017
    Reason for notification Recurrence of a listed disease
    Date of previous occurrence 26/05/2017
    Manifestation of disease Clinical disease
    Causal agent Highly pathogenic avian influenza virus
    Serotype H5N1
    Nature of diagnosis Clinical, Laboratory (advanced)
    This event pertains to the whole country
    New outbreaks (1)
    Outbreak 1 Liem Thuan, Liem Thuan, Thanh Liem, HA NAM
    Date of start of the outbreak 04/07/2017
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Backyard
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 1135 500 300 835 0
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 1135 500 300 835 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds 44.05% 26.43% 60.00% 100.00%
    *Removed from the susceptible population through death, destruction and/or slaughter
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Control measures
    Measures applied
    • Movement control inside the country
    • Vaccination in response to the outbreak (s)
    • Surveillance outside containment and/or protection zone
    • Stamping out
    • Disinfection
    • 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 Center for Veterinary Diagnosis (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 06/07/2017 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
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