[Source: OIE, full page: (LINK). Extract, edited.]
Low pathogenic avian influenza (poultry), Chinese Taipei
Information received on 30/05/2011 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
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Low pathogenic avian influenza (poultry), Chinese Taipei
Information received on 30/05/2011 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 Follow-up report No. 2
- Start date 28/03/2011
- Date of first confirmation of the event 07/04/2011
- Report date 30/05/2011
- Date submitted to OIE 30/05/2011
- 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 H7N3
- Nature of diagnosis Laboratory (advanced)
- This event pertains to a defined zone within the country
- Related reports
- Immediate notification (11/04/2011)
- Follow-up report No. 1 (22/04/2011)
- Follow-up report No. 2 (30/05/2011)
- New outbreaks
- Outbreak 1 - Dalin Township, CHIA-I
- Date of start of the outbreak 20/05/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
- Birds ? 1900 ? 20 ? 0 ? 0 ? 0
- Outbreak 1 - Dalin Township, CHIA-I
- Summary of outbreaks
- Total outbreaks: 1
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - 1.05% - 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
- Source of the outbreak(s) or origin of infection
- Epidemiological comments
- After the H7N3 outbreak confirmed on 7 April 2011, epidemiological investigation and intensified surveillance were carried out on the surrounding poultry farms within a 3-km-radius area around the index farm.
- Samples taken from a duck breeder tested positive with both RT-PCR and virus isolation, and identified as H7N3 strain avian influenza virus (AIV) on 26 May 2011.
- Movement restriction was implemented on the farm immediately after AIV was detected.
- Clinical investigation on that farm was done and the result showed that the breeders in the farm were healthy without abnormal mortality.
- The pathogenicity assays of this virus isolate are now 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
- Measures applied
- 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) - 26/05/2011 ? Positive
- Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 26/05/2011 ? Positive
- Birds - virus isolation - 26/05/2011 ? Positive
- Tests and results: Species ? Test - Test date ? Result
- Laboratory name and type Animal Health Research Institute (National laboratory)
- Future Reporting
- The event is continuing. Weekly follow-up reports will be submitted.
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