OIE: Low pathogenic avian influenza (poultry)(H5N2), Chinese Taipei
submited by kickingbird at Jun, 20, 2017 10:15 AM from OIE
Summary
|
|
Outbreak 1 (2016-cy-1) |
Minxiong Township, CHIAYI COUNTY |
Date of start of the outbreak |
13/01/2016 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
500 |
5 |
5 |
0 |
0 | |
Affected population |
Turkeys (2016-cy-1) | |
Outbreak 2 (2017-tn-1) |
Xiaying Distrct, TAINAN CITY |
Date of start of the outbreak |
07/04/2017 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
21834 |
534 |
534 |
0 |
0 | |
Affected population |
Chickens (2017-tn-1) | |
Outbreak 3 (2017-yl-1) |
Dongshi Township, YUNLIN COUNTY |
Date of start of the outbreak |
10/04/2017 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
28000 |
2500 |
2500 |
0 |
0 | |
Affected population |
Native chickens (2017-yl-1) | |
Summary of outbreaks |
Total outbreaks: 3 |
Total animals affected |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Birds |
50334 |
3039 |
3039 |
0 |
0 | |
Outbreak statistics |
Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
Birds |
6.04% |
6.04% |
100.00% |
6.04% | |
*Removed from the susceptible population through death, destruction and/or slaughter | |
Epidemiology
Source of the outbreak(s) or origin of infection |
|
Epidemiological comments |
Abnormal mortalities were observed in 3 poultry farms in Tainan City, Yunlin County and Chiayi County. Samples were sent to the National Laboratory, the Animal Health Research Institute (AHRI) for diagnosis. H5N2 subtype low pathogenic avian influenza (LPAI) was confirmed by AHRI. These farms were put under movement restrictions. The pathogenicity of the virus was subsequently confirmed by the AHRI as low pathogenic (less than 75% mortality of the tested chickens) on 8 June 2017. Surrounding poultry farms within 3 km radius of the infected farms were under intensified surveillance for 3 months. | |
|
Control measures
Measures applied |
- Movement control inside the country
- Screening
- Quarantine
- Zoning
- Vaccination prohibited
- No treatment of affected animals
|
Measures to be applied |
| |
Diagnostic test results
Laboratory name and type |
Species |
Test |
Test date |
Result |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
16/01/2016 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
10/04/2017 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
gene sequencing |
13/04/2017 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
intravenous pathogenicity index (IVPI) test |
09/06/2017 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
15/01/2016 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
09/04/2017 |
Positive |
Animal Health Research Institute (AHRI) (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
12/04/2017 |
Positive | |
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted. | |
See Also:
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