OIE: Highly pathogenic avian influenza(H5N5), Chinese Taipei
submited by kickingbird at Sep, 8, 2020 11:57 AM from OIE
| Information received on 07/09/2020 from Dr Wen-Jane Tu, Chief Veterinary Officer, Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei | |
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Summary
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| Outbreak 1 (2020-yl-15) |
Taixi Township, Yunlin County |
| Date of start of the outbreak |
17/08/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
4666 |
20 |
0 |
4666 |
0 | |
| Affected population |
Meat ducks(2020-yl-15) | |
| Outbreak 2 (2020-tp-6) |
Wanhua District, Taipei City |
| Date of start of the outbreak |
23/08/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Slaughterhouse |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
4 |
1 |
0 |
4 |
0 | |
| Affected population |
Native chickens(2020-tp-6) | |
| Summary of outbreaks |
Total outbreaks: 2 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
4670 |
21 |
0 |
4670 |
0 | |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Birds |
0.45% |
0.00% |
0.00% |
100.00% | |
| *Removed from the susceptible population through death, destruction and/or slaughter | |
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Epidemiology
| Source of the outbreak(s) or origin of infection |
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| Epidemiological comments |
Samples from Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI), for diagnosis. Highly pathogenic avian influenza H5N5 subtype was confirmed by AHRI. The infected farm in Yunlin County 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 within 3 km radius of the infected farm are under intensified surveillance for three months. Suspected signs were observed in poultry carcasses during post-mortem inspection in the abattoir in Taipei City. Samples were sent to the AHRI for diagnosis. H5N5 subtype HPAI was confirmed by the AHRI. The carcasses were destroyed and thorough cleaning and disinfection have been conducted in the abattoir. After tracing back to the farm of origin, any positive results will be included in follow-up reports. | |
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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
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| Measures to be applied |
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Diagnostic test results
| Laboratory name and type |
Species |
Test |
Test date |
Result |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
19/08/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
25/08/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
27/08/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
18/08/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
24/08/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
26/08/2020 |
Positive | |
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Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
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