Highly pathogenic avian influenza, Korea (Rep. of) (WAHID Interface - OIE World Animal Health Information Database, Jan 03 2011, edited)

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Highly pathogenic avian influenza, Korea (Rep. of) (WAHID Interface - OIE World Animal Health Information Database, Jan 03 2011, edited)


[Source: OIE, full text: <cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10121 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Edited.]

Highly pathogenic avian influenza, Korea (Rep. of)

Information received on 02/01/2011 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. 2
  • Start date 29/11/2010
  • Date of first confirmation of the event 07/12/2010
  • Report date 02/01/2011
  • Date submitted to OIE 02/01/2011
  • 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)

• New outbreaks
  • Outbreak 1 - Jumoon-ri, Yonghyeon-myun, Sacheon city, GYEONGSANGNAM-DO
    • Date of start of the outbreak 26/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Wild species - 5 - 1 - 1 - 0 - 0
      • Affected Population Anas platyrhynchos (mallard duck) found dead
  • Outbreak 2 - Dukho-ri, Sani-myun, Haenam-gun, JEOLLANAM-DO
    • Date of start of the outbreak 22/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Not applicable
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Wild species - 74 - 20 - 20 - 0 - 0
      • Affected Population Anas platyrhynchos (mallard duck) found dead
  • Outbreak 3 - Poongseo-ri, Poongse-myun, Cheonan city, CHUNGCHEONGNAM-DO
    • Date of start of the outbreak 29/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 10850 - 1 - 1 - 10849 - 0
      • Affected Population A duck
  • Outbreak 4 - Muhyeong-ri, Mangseong-myun, Iksan city, JEOLLABUK-DO
    • Date of start of the outbreak 29/12/2010
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Birds - 17000 - 5 - 5 - 16995 - 0
      • Affected Population Chickens

• Summary of outbreaks
  • Total outbreaks: 4
  • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
    • Wild species - 79 - 21 - 21 - 0 - 0
    • Birds - 27850 - 6 - 6 - 27844 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Wild species - 26.58% - 26.58% - 100.00% - 26.58%
    • Birds - 0.02% - 0.02% - 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
  • Dead bodies of wild mallard ducks were reported to the local authorities.
  • Test 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 were also notifications about suspected HPAI cases from farms.
  • Those were proved as HPAI virus H5N1 subtype in the NVRQS.
  • The poultry in the affected farms were culled.
  • Disinfection and clinical surveillance in the area within 10km radius from the affected farms were enhanced.

• 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 - reverse transcription - polymerase chain reaction (RT-PCR) - 31/12/2010 - Positive
      • Wild species - reverse transcription - polymerase chain reaction (RT-PCR) - 28/12/2010 - Positive
      • Wild species - reverse transcription - polymerase chain reaction (RT-PCR) - 01/01/2011 - Positive

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

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