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

Information received on 02/08/2013 from Dr Ping-Cheng Yang, Director, Animal Technology Institute Ta?wan, Council of Agriculture, Ta?wan, Chinese Taipei

Summary

Report type
Immediate notification
Date of start of the event
03/07/2013
Date of pre-confirmation of the event
16/07/2013
Report date
02/08/2013
Date submitted to OIE
02/08/2013
Reason for notification
First occurrence of a listed disease
Manifestation of disease
Sub-clinical infection
Causal agent
Low pathogenic avian influenza
Serotype
H5N3
Nature of diagnosis
Laboratory (advanced)
This event pertains to
the whole country

New outbreaks

Summary of outbreaks
Total outbreaks: 1
Outbreak Location
  • HUA-LIEN ( Yuli )
Total animals affected
Species
Susceptible
Cases
Deaths
Destroyed
Slaughtered
Birds
13400
20
0
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
0.15%
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
During the first round surveillance conducted on the poultry farms around the H5N2 infected duck farm detected in Hua-Lien County, the H5N3 avian influenza virus was isolated from swabs taken from a meat-type duck farm on 16 July 2013. Movement restriction was conducted on this infected farm. The result of clinical investigation showed that the duck were in healthy condition without clinical signs and abnormal mortality. Subsequently, the national laboratory confirmed this H5N3 case as LPAI by virological tests and pathogenicity test on 2 August 2013. The surveillance of poultry farms around the H5N3 affected farm 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 (2012).

Control measures

Measures applied
  • Quarantine
  • Movement control inside the country
  • Screening
  • Disinfection of infected premises/establishment(s)
  • No vaccination
  • 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
18/07/2013
Negative
Birds
intravenous pathogenicity index (IVPI) test
02/08/2013
Negative
Birds
virus isolation
16/07/2013
Positive

Future Reporting

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