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

Information received on 10/01/2012 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 25/11/2011
Date of first confirmation of the event 06/01/2012
Report date 10/01/2012
Date submitted to OIE 10/01/2012
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 11/02/2011
Manifestation of disease Clinical disease
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 63000 200 200 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.32% 0.32% 100.00% 0.32%

* 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 Clinical and epidemiological investigations were initiated after cases were reported. Samples (dead chicken, blood and swab samples) were also taken from the index layer farm for serological and virological analysis, and H5N2 antibody and antigen were detected. Movement restriction, clinical health inspection and epidemiological investigation were conducted on the index farm with the results of normal health, mortality and egg production condition. Clinical and epidemiological investigations for the surrounding poultry farms were implemented and no clinical suspected case or abnormal mortality were detected or observed. Other laboratory tests are on-going.

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 (2011).

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 gene sequencing 09/01/2012 Positive
Birds haemagglutination inhibition test (HIT) 06/01/2012 Positive
Birds reverse transcription - polymerase chain reaction (RT-PCR) 09/01/2012 Positive
Birds virus isolation 10/01/2012 Positive

Future Reporting

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