OIE: Highly pathogenic avian influenza,Chinese Taipei(H5N6)
submited by kickingbird at Mar, 7, 2017 15:8 PM from OIE
| Information received on 07/03/2017 from Dr Tai-Hwa Shih, Chief Veterinary Officer, Deputy Director General, Bureau of Animal and Plant Health Inspection and Quarantine Council of Agriculture Executive Yuan, Ministry of Agriculture, Taipei, Chinese Taipei | |
|
Summary
| Report type |
Follow-up report No. 2 |
| Date of start of the event |
02/02/2017 |
| Date of confirmation of the event |
05/02/2017 |
| Report date |
07/03/2017 |
| Date submitted to OIE |
07/03/2017 |
| Reason for notification |
New strain of a listed disease in the country |
| Causal agent |
Highly pathogenic avian influenza virus |
| Serotype |
H5N6 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
Immediate notification (12/02/2017)
Follow-up report No. 1 (01/03/2017)
Follow-up report No. 2 (07/03/2017)
| |
|
|
| Outbreak 1 (2017-tn-4) |
Shanhua District, TAINAN CITY |
| Date of start of the outbreak |
14/02/2017 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
7885 |
|
0 |
7885 |
0 | |
| Affected population |
Breeding chicken (2017-tn-4) | |
| Outbreak 2 (2017-hl-2) |
Fenglin Township, HUALIEN COUNTY |
| Date of start of the outbreak |
18/02/2017 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
5960 |
|
0 |
5960 |
0 | |
| Affected population |
Ducks (2017-hl-2) | |
| Outbreak 3 (2017-hl-3) |
Fenglin Township, HUALIEN COUNTY |
| Date of start of the outbreak |
18/02/2017 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
5155 |
|
0 |
5155 |
0 | |
| Affected population |
Ducks (2017-hl-3) | |
| Summary of outbreaks |
Total outbreaks: 3 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
19000 |
** |
0 |
19000 |
0 | |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Birds |
** |
0.00% |
** |
100.00% | |
| *Removed from the susceptible population through death, destruction and/or slaughter |
| **Not calculated because of missing information | |
|
Epidemiology
| Source of the outbreak(s) or origin of infection |
|
| Epidemiological comments |
Samples from two poultry farms in Hualien County were sent to the National Laboratory, Animal Health Research Institute (AHRI) for analysis in response to the testing requirement before being put on the market. Highly pathogenic avian influenza H5N6 subtype was confirmed by the AHRI. The 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. Abnormal signs were observed in one poultry farm in Tainan City. Samples were sent to AHRI for analysis. Highly pathogenic avian influenza H5N6 subtype was confirmed by the AHRI. The 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. In order to prevent the H5N6 HPAI virus from spreading, intensified surveillance measures have been conducted by the veterinary authority. All the duck farms within 5-kilometer radius of the infected farms are subjected to movement restriction and avian influenza test. The restriction will be lifted if the test result is negative. In addition, all the poultry farms within 1-kilometer radius of the infected farms are subjected to movement restriction and avian influenza test once every month for 3 months. The restriction will be lifted if the result of the first round testing is negative. In addition to the abovementioned measures, all poultry farms within a 3-kilometer radius of the infected farms are under monitoring for three months. | |
|
|
Control measures
| Measures applied |
- Movement control inside the country
- Screening
- Disinfection / Disinfestation
- Quarantine
- Stamping out
- 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 (National laboratory) |
Birds |
gene sequencing |
24/02/2017 |
Positive |
| Animal Health Research Institute (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
17/02/2017 |
Positive |
| Animal Health Research Institute (National laboratory) |
Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
23/02/2017 |
Positive | |
|
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. | |
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