OIE: Highly pathogenic avian influenza, China (People´s Rep. of)
Information received on 18/04/2012 from Dr Zhang Zhongqiu, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People´s Rep. of)
Summary
| Report type |
Follow-up report No. 2 |
| Start date |
02/12/2011 |
| Date of first confirmation of the event |
12/12/2011 |
| Report date |
18/04/2012 |
| Date submitted to OIE |
18/04/2012 |
| Reason for notification |
Reoccurrence of a listed disease |
| Date of previous occurrence |
25/05/2010 |
| Manifestation of disease |
Clinical disease |
| Causal agent |
Highly pathogenic avian influenza virus |
| Serotype |
H5N1 |
| Nature of diagnosis |
Clinical, Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
|
New outbreaks
| Outbreak 1 |
Yanglang village, Yuanzhou district, Guyuan, NINGXIA |
| Date of start of the outbreak |
13/04/2012 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Farm |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Destroyed |
Slaughtered |
| Birds |
95000 |
23880 |
10468 |
84532 |
0 | |
| Summary of outbreaks |
Total outbreaks: 1 |
| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Birds |
25.14% |
11.02% |
43.84% |
100.00% |
* Removed from the susceptible population through death, destruction and/or slaughter |
Epidemiology
| Source of the outbreak(s) or origin of infection |
|
Control measures
| Measures applied |
- Stamping out
- Quarantine
- Movement control inside the country
- Zoning
- Disinfection of infected premises/establishment(s)
- Dipping / Spraying
- Vaccination prohibited
- No treatment of affected animals
|
| Measures to be applied |
|
Diagnostic test results
| Laboratory name and type |
Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE’s Reference Laboratory) |
| Tests and results |
| Species |
Test |
Test date |
Result |
| Birds |
haemagglutination inhibition test (HIT) |
18/04/2012 |
Positive |
| Birds |
intravenous pathogenicity index (IVPI) test |
18/04/2012 |
Positive |
| Birds |
reverse transcription - polymerase chain reaction (RT-PCR) |
18/04/2012 |
Positive | |
Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. |