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Taiwan - 1 new outbreak of highly pathogenic avian influenza H5 on farm in Chiayi County (OIE, November 20, 2019)
Taiwan - 1 new outbreak of highly pathogenic avian influenza H5 on farm in Chiayi County (OIE, November 20, 2019)
Highly pathogenic avian influenza,
Chinese Taipei
Information received on 20/11/2019 from Dr Wen-Jane Tu, Chief Veterinary Officer, 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
Date of start of the event
27/10/2019
Date of confirmation of the event
30/10/2019
Report date
20/11/2019
Date submitted to OIE
20/11/2019
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
11/07/2018
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic avian influenza virus
Serotype
H5
Nature of diagnosis
Laboratory (advanced)
This event pertains to
a defined zone within the country
New outbreaks (1)
Outbreak 1 (2019-cy-1)
Puzi city, Chiayi County
Date of start of the outbreak
27/10/2019
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Farm
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
3000
2899
2899
101
0
Affected population
Native Chickens(2019-cy-1)
Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
3000
2899
2899
101
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
96.63%
96.63%
100.00%
100.00%
*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 infected animals of the farm in Chiayi County were noticed to have clinical signs and the samples were sent by the Local Animal Disease Inspection Authority (LADIA) to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. H5 subtype HPAI was confirmed by AHRI. The infected farm has been placed under movement restriction. All animals on the infected farm have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. Surrounding poultry farms (1 duck farm, 1 goose farm and 1 layer chicken farm) within a one-kilometer radius of the infected farm are clinically healthy and test results of HPAI are all negative.
Control measures
Measures applied
Movement control inside the country
Surveillance outside containment and/or protection zone
Surveillance within containment and/or protection zone
Traceability
Quarantine
Stamping out
Zoning
Disinfection
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 Institute (AHRI) (National laboratory)
Birds
gene sequencing
30/10/2019
Positive
Animal Health Research Institute (AHRI) (National laboratory)
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