Highly pathogenic avian influenza, Korea (Rep. of) (WAHID Interface - OIE World Animal Health Information Database, Jan 7 2011, edited)

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Highly pathogenic avian influenza, Korea (Rep. of) (WAHID Interface - OIE World Animal Health Information Database, Jan 7 2011, edited)


[Source: OIE, full text: <cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10137">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]

Highly pathogenic avian influenza, Korea (Rep. of)

Information received on 07/01/2011 from Dr Kiyoon Chang, CVO & Director, Quarantine Policy Division, Food Safety & Consumer Affairs Policy Bureau, MIFAFF (Ministry of Food, Agriculture, Forestry and Fisheries) , Gyeonggi -Do, Korea (Rep. of)

• Summary
  • Report type Follow-up report No. 3
  • Start date 29/11/2010
  • Date of first confirmation of the event 07/12/2010
  • Report date 07/01/2011
  • Date submitted to OIE 07/01/2011
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 15/05/2008
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H5N1
  • Nature of diagnosis Laboratory (basic), Laboratory (advanced)
  • This event pertains to a defined zone within the country
  • Related reports
    • Immediate notification (09/12/2010)
    • Follow-up report No. 1 (14/12/2010)
    • Follow-up report No. 2 (02/01/2011)
    • Follow-up report No. 3 (07/01/2011)

• New outbreaks
  • Outbreak 1 - Bongso-ri, Sijong-myun, Yeongam-gum, JEOLLANAM-DO
    • Date of start of the outbreak 05/01/2011
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 14500 - 4500 - 4500 - 10000 - 0
      • Affected Population Ducks
  • Outbreak 2 - Sinbyeok-dong, Sacheon city, GYEONGSANGNAM-DO
    • Date of start of the outbreak 30/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Wild species - ... - 1 - 1 - 0 - 0
      • Affected Population Aix galericulata (mandarin duck) found dead

• Summary of outbreaks
  • Total outbreaks: 2
  • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
    • Birds - 14500 - 4500 - 4500 - 10000 - 0
    • Wild species - ... - 1 - 1 - 0 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 31.03% - 31.03% - 100.00% - 100.00%
    • Wild species - ** - ** - 100.00% - **
    • * 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
    • Unknown or inconclusive

• Epidemiological comments
  • A dead wild mandarin duck was reported to the local authorities.
  • The tests carried out in the NVRQS detected H5N1 HPAI virus antigen from some samples.
  • The area within 10km radius from the detection spot was put under movement control.
  • Disinfection and clinical surveillance in that area has been intensified.
  • There was also a notification of HPAI suspected cases in a farm. 4,500 out of 14,500 ducks were dead in 5 days.
  • It was proved as HPAI virus H5N1 subtype in NVRQS.
  • The poultry in the affected farm and in the area within 500 m radius from the affected farm were culled and buried.
  • Disinfection and clinical surveillance in the area within 10km radius from the affected farm has been intensified.

• Control measures
  • Measures applied
    • Control of wildlife reservoirs
    • Stamping out
    • Movement control inside the country
    • Screening
    • 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 National Veterinary Research and Quarantine Service (NVRQS) (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Birds - gene sequencing - 07/01/2011 - Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 07/01/2011 - Positive
      • Wild species - reverse transcription - polymerase chain reaction (RT-PCR) - 06/01/2011 - Positive

• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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