OIE: Low pathogenic avian influenza (poultry), Chinese Taipei

Information received on 04/10/2010 from Dr Kwo-Ching Huang, Chief Veterinary Officer and Deputy Director General, , Bureau of Animal and Plant Health Inspection and Quarantine Council of agriculture, Executive Yuan , Taipei, Chinese Taipei

Summary

Report type Immediate notification
Start date 20/09/2010
Date of first confirmation of the event 29/09/2010
Report date 04/10/2010
Date submitted to OIE 04/10/2010
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 02/04/2010
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country

New outbreaks

Summary of outbreaks Total outbreaks: 1
Location(s)
  • CHANG-HUA (Fang-Yuan Township)
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 18000 20 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.11% 0.00% 0.00% 0.00%

* 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 An avian influenza virus was isolated by active surveillance sampling and confirmed as H5N2 subtype on 29 September 2010. Antibodies were also detected on those samples. Movement restriction was implemented on the infected farm immediately after the confirmation was made. Clinical health investigation in this farm showed that the layers were in healthy condition with normal egg production. Abnormal mortality was not observed in the infected farm. The clinical and epidemiological investigation of surrounding poultry farms are in progress. Viral pathogenicity test is underway.

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 (2010).

Control measures

Measures applied
  • Quarantine
  • 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 Animal Health Research Institute (National laboratory)
Tests and results
Species Test Test date Result
Birds haemagglutination inhibition test (HIT) 29/09/2010 Positive
Birds reverse transcription - polymerase chain reaction (RT-PCR) 29/09/2010 Positive
Birds virus isolation 29/09/2010 Positive

Future Reporting

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