OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CHINA Follow-up report No. 4
submited by kickingbird at Oct, 28, 2005 8:10 AM from OIE
Information received on 24 and 25 October 2005 from Mr Jia Youling, Director General, Veterinary Bureau, Ministry of Agriculture, Beijing:
End of previous report period: 19 October 2005 (see Disease Information, 18 [42], 367, dated 21 October 2005).
End of this report period: 25 October 2005.
Precise identification of agent: highly pathogenic avian influenza virus subtype H5.
Date of first confirmation of the event: 7 June 2005.
Nature of diagnosis: clinical, post-mortem and laboratory.
Details of new outbreaks:
| First administrative division | Lower administrative division | Type of epide-miolo-gical unit | Name of the location | Date of start of the outbreak | Spe-cies | Number of animals in the outbreaks | ||||
| susceptible | cases | deaths | destroyed | slaugh-tered | ||||||
| AnHui province | Tianchang municipality | village | Liangying | 20 Oct. 2005 | avi | 2,100 | 550 | 550 | 1,550 | 0 |
| Hunan province | Xiangtan county | village | Wantang | 22 Oct. 2005 | avi | 687 | 545 | 545 | 142 | 0 |
Description of affected population in the new outbreaks:
- Outbreak in Liangying, AnHui province: chickens and geese.
- Outbreak in Wantang, Hunan province: chickens and ducks.
Diagnosis:
| Laboratory where diagnostic tests were performed | Diagnostic tests used | Date | Results |
| Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin (national reference laboratory for avian influenza) |
- haemagglutination inhibition test; - RT-PCR(1). |
24 and 25 Oct. 2005 | positive |
| intravenous pathogenicity index (IVPI) test | 24 and 25 Oct. 2005 | positive (highly pathogenic) |
Source of new outbreaks: unknown or inconclusive.
Control measures undertaken:
- stamping out applied to the entire affected poultry flocks; in addition, killing and destruction of 43,186 birds in the area around the outbreak in Liangying, AnHui province, and of 2,345 birds in the area around the outbreak in Wantang, Hunan province;
- quarantine;
- movement control inside the country;
- screening;
- zoning;
- vaccination;
- disinfection of infected premises/establishments;
- dipping/spraying.
Vaccination in response to the outbreaks:
| First administrative division | Total number of birds vaccinated | Details of the vaccine |
| AnHui province | 140,000 | monovalent inactivated vaccine against subtype H5N2 |
| Hunan province | 43,750 | monovalent inactivated vaccine against subtype H5N2 |
Final report: no.
(1) RT-PCR: reverse transcriptase - polymerase chain reaction
- USCDC: Avian Influenza A(H5N1) U.S. Situation Update and CDC Activities 19 hours ago
- USCDC: Urgent field correction notice 1 days ago
- Joint FAO/WHO/WOAH preliminary assessment of recent influenza A(H5N1) viruses 2 days ago
- Primers and probes for H5 and N1 qRT-PCR detection [CNIC] 3 days ago
- USDA: Actions to Protect Livestock Health From Highly Pathogenic H5N1 Avian Influenza 4 days ago
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