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

Information received on 21/03/2011 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 02/03/2011
Date of first confirmation of the event 21/03/2011
Report date 21/03/2011
Date submitted to OIE 21/03/2011
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 11/02/2011
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)
  • CHIA-I (Sikou Township)
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 4980 20 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.40% 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 The notifiable avian influenza (NAI) viral infection was detected on a native chicken breeder farm in the process of active surveillance and identified as H5N2 strain on 21 March 2011. Movement restriction was implemented on the infected farm immediately after the virus was detected. Clinical health investigation in the infected farm was done and showed that the breeders were in healthy condition and abnormal mortality was not observed. The positive results of serological and virological tests confirm this outbreak. The clinical and epidemiological investigation of surrounding poultry farms are in progress.

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) 21/03/2011 Positive
Birds reverse transcription - polymerase chain reaction (RT-PCR) 21/03/2011 Positive
Birds virus isolation 21/03/2011 Positive

Future Reporting

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