OIE: Highly pathogenic avian influenza(H5N2), Chinese Taipei
submited by kickingbird at Jan, 22, 2020 16:42 PM from OIE
| Information received on 21/01/2020 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 | |
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Summary
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| Outbreak 1 (2020-tp-1) |
Wanhua District, Taipei City |
| Date of start of the outbreak |
01/01/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Slaughterhouse |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
20 |
2 |
0 |
20 |
0 | |
| Affected population |
Native Chickens(2020-tp-1) | |
| Outbreak 2 (2020-yl-1) |
Citong Township, Yunlin County |
| Date of start of the outbreak |
04/01/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
8155 |
1178 |
1178 |
6977 |
0 | |
| Affected population |
Native Chickens(2020-yl-1) | |
| Outbreak 3 (2020-yl-2) |
Yuanchang Township, Yilan County |
| Date of start of the outbreak |
07/01/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
15083 |
1033 |
1033 |
14050 |
0 | |
| Affected population |
Native Chickens(2020-yl-2) | |
| Summary of outbreaks |
Total outbreaks: 3 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Birds |
23258 |
2213 |
2211 |
21047 |
0 | |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Birds |
9.52% |
9.51% |
99.91% |
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 |
|
| Epidemiological comments |
Samples from Yunlin County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for diagnosis. Highly pathogenic avian influenza H5N2 subtype was confirmed by AHRI. The infected farms have been placed under movement restriction. All animals on the infected farms have been culled. Thorough cleaning and disinfection have been conducted after stamping out operation. The infected farms in Yunlin County were cleaned and disinfected. Surrounding poultry farms within 3 km radius of the infected farms are under intensified surveillance for three months. Suspected signs were observed in poultry carcasses during post-mortem inspection in one abattoir in Taipei City. Samples were sent to the AHRI for diagnosis. H5N2 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
- Disinfection / Disinfestation
- Screening
- Traceability
- Quarantine
- Surveillance outside containment and/or protection zone
- Official destruction of animal products
- Official disposal of carcasses, by-products and waste
- Stamping out
- Surveillance within containment and/or protection zone
- 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 |
03/01/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
08/01/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
10/01/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
02/01/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
07/01/2020 |
Positive |
| Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
09/01/2020 |
Positive | |
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Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
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