Low pathogenic avian influenza (poultry),
Chinese Taipei
Information received on 04/11/2013 from Dr Ping-Cheng Yang, President, Agriculture Technology Research Institute, Council of Agriculture, Hsinchu City, Chinese Taipei
Summary
Report type Follow-up report No. 11
Date of start of the event 12/11/2012
Date of confirmation of the event 20/11/2012
Report date 04/11/2013
Date submitted to OIE 04/11/2013
Date event resolved 18/02/2014
Reason for notification Recurrence of a listed disease
Date of previous occurrence 13/07/2012
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
Related reports Immediate notification (22/11/2012)
Follow-up report No. 1 (21/12/2012)
Follow-up report No. 2 (04/01/2013)
Follow-up report No. 3 (18/01/2013)
Follow-up report No. 4 (15/03/2013)
Follow-up report No. 5 (18/04/2013)
Follow-up report No. 6 (19/04/2013)
Follow-up report No. 7 (03/06/2013)
Follow-up report No. 8 (02/08/2013)
Follow-up report No. 9 (30/08/2013)
Follow-up report No. 10 (23/09/2013)
Follow-up report No. 11 (04/11/2013)
Follow-up report No. 12 (09/04/2014)
New outbreaks (1)
Outbreak 1 Yuli Township, Hualien County
Date of start of the outbreak 10/08/2013
Outbreak status Resolved (18/02/2014)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 11641 20 0 0 11573
Affected population Ducks
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 11641 20 0 0 11573
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.17% 0.00% 0.00% 99.42%
*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 During the third round surveillance conducted on the poultry farms around the first H5N2 infected duck farm detected in Hualien County in 2013, the H5N2 avian influenza virus was isolated from swabs taken from a meat-type duck farm on 18 October 2013. Movement restriction was conducted. The result of clinical investigation showed that the duck were in healthy condition without clinical signs and abnormal mortality. The national laboratory confirmed this H5N2 outbreak as LPAI by virological tests and pathogenicity test (done by lethal rate of susceptible chickens) on 4 November 2013.
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Disinfection / Disinfestation
  • Quarantine
  • Zoning
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Animal Health Research Insitute (National laboratory) Birds virus isolation 18/10/2013 Positive
Animal Health Research Institute (National laboratory) Birds gene sequencing 22/10/2013 Negative
Animal Health Research Institute (National laboratory) Birds haemagglutination inhibition test (HIT) 04/11/2013 Negative
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations