Information received on 02/01/2009 from , , , , , Korea (Rep. of)

Summary

Report type Immediate notification (Final report)
Start date 29/12/2008
Date of first confirmation of the event 29/12/2008
Report date 02/01/2009
Date submitted to OIE 02/01/2009
Date event resolved 31/12/2008
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 04/10/2008
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-BUKDO (Maengdong-myeon, Eumsung-gun) : Duck farm

Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 6837 ** 0 0 6837

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 last September in all duck farms.
On 29 December 2008, faecal samples collected from the duck farm tested positive to haemagglutination (HA) test.
On 31 December 2008, the virus was identified as low pathogenic avian influenza virus subtype H5N2, by HA, inhibition of neuraminidase (NA) and gene sequencing.
All ducks in the affected farm were slaughtered on 23 December 2008.


Control measuresMeasures applied 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 31/12/2008 Positive
Birds haemagglutination (HA) test 29/12/2008 Positive
Birds neuraminidase inhibition assay 29/12/2008 Positive



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