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

Information received on 21/05/2010 from Dr Kiyoon Chang, CVO & Director, Labelling, Quarantine and Inspection Division, Food Safety & Consumer Affairs Policy Bureau, MIFAFF (Ministry of Food, Agriculture, Forestry and Fisheries) , Gyeonggi -Do, Korea (Rep. of)

Summary

Report type Immediate notification
Start date 13/05/2010
Date of first confirmation of the event 20/05/2010
Report date 21/05/2010
Date submitted to OIE 21/05/2010
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 27/12/2009
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus
Serotype H7N7
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country

New outbreaks

Summary of outbreaks Total outbreaks: 2
Location(s)
  • CHOLLA-NAMDO (Wolya-myeon, Hampyeong-gun; Bongsan-myeon, Damyang-gun)
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 53300 ** 0 53300 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

Epidemiology

Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments As part of the avian influenza surveillance programme, Jeollanam-do Institute of Livestock and Veterinary Science took samples (faeces, laryngo-pharyngeal swabs and blood) from the farms on 13 May. Haemagglutination test results were positive on 18 May. The National Veterinary Research and Quarantine Service (NVRQS) found avian influenza antigen (H7) by PCR on 20 May and confirmed it as low pathogenic avian influenza virus (H7N7) by gene sequencing on 21 May.
The poultry in the farms were culled as a precautionary measure and disinfection is being implemented on 21 May.

Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2009).

Control measures

Measures applied
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • 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 21/05/2010 Positive
Birds polymerase chain reaction (PCR) 20/05/2010 Positive

Future Reporting

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