Low pathogenic avian influenza (poultry), Korea (Rep. of)

Information received on 06/10/2008 from Dr Chang-Seob Kim, CVO & Director , Animal Health Team, Ministry of Food, Agriculture, Forestry (MIFAFF), Gwacheon-city, Korea (Rep. of)

Summary

Report type Immediate notification (Final report)
Start date 03/10/2008
Date of first confirmation of the event 04/10/2008
Report date 06/10/2008
Date submitted to OIE 06/10/2008
Date event resolved 04/10/2008
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 23/11/2007
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country

New outbreaksSummary of outbreaks Total outbreaks: 1
Outbreak Location and Affected population CH´UNGCH´ONG-NAMDO (YeSan-gun, Oga-myun) : a parent stock duck farm

Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 5000 ** 0 5000 0

Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 0.00% ** 100.00%

* Removed from the susceptible population through death, destruction and/or slaughter
** Not calculated because of missing information


EpidemiologySource of the outbreak(s) or origin of infection Unknown or inconclusive

Epidemiological comments As part of the on-going control measures for avian influenza in the Republic of Korea, surveillance has been conducted since September in all parent stock duck farms.
On 3 October, faecal samples from a parent stock duck farm proved positive to avian influenza antigen. But antibody test results of samples from blood and eggs were negative. The virus was identified as low pathogenic avian influenza virus subtype H5N2 by haemagglutination test (HA), neuraminidase gene typing and gene sequencing of cleavage site of the HA gene on 4 October 2008.
As a preventive measure, ducks in the farm were stamped out and the farm was disinfected.


Control measuresMeasures applied Stamping out
Screening
Disinfection of infected premises/establishment(s)
Vaccination prohibited
No treatment of affected animals

Measures to be applied No other measures



Diagnostic test resultsLaboratory name and type National Veterinary Research Quarantine Service (NVRQS) (National laboratory)
Tests and results Species Test Test date Result
Birds gene sequencing 04/10/2008 Positive



Future ReportingThe event is resolved. No more reports will be submitted.