OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CHINA follow-up report No.2

OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CHINA follow-up report No.2
submited by kickingbird at Aug, 13, 2005 8:8 AM from OIE

Information received on 10 August 2005 from Mr Jia Youling, Director General, Veterinary Bureau, Ministry of Agriculture, Beijing:

End of previous report period: 20 June 2005 (see Disease Information, 18 [25], 166, dated 24 June 2005).

End of this report period: 10 August 2005.

Precise identification of agent : highly pathogenic avian influenza (HPAI) type H5N1.

Date of first confirmation of the event: 10 August 2005.

Date of start of the event: 1 August 2005.

Clinical disease: yes.

Nature of diagnosis: clinical, post-mortem and laboratory.

Details of new outbreak:

*First administrative division*	*Lower administrative division*	*Type of epide-miolo-gical unit*	*Date of start of the outbreak*	*Spe-cies*	*Number of animals in the outbreak*
*First administrative division*	*Lower administrative division*	*Type of epide-miolo-gical unit*	*Date of start of the outbreak*	*Spe-cies*	*susceptible*	*cases*	*deaths*	*destroyed*	*slaugh-tered*
Tibet Autonomous Region	Lhasa	farm	1 August 2005	avi	2,608	133	133	2,475	0

Description of affected population: breeding hens.

Diagnosis:

*Laboratories where diagnosis was made*	*Diagnostic tests used*	*Date*	*Results*
General Station of Animal Epidemics Prevention and Surveillance, Tibet, Lhasa	haemagglutination inhibition (HI) test	4 August 2005	positive
National Avian Influenza Reference Laboratory, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences	RT-PCR⁽¹⁾	10 August 2005	positive
	intravenous pathogenicity index		positive (HPAI)

Source of outbreak or origin of infection: unknown or inconclusive.

Control measures undertaken:

- stamping out;

- quarantine;

- movement control inside the country;

- screening;

- zoning;

- vaccination;

- disinfection of infected premises/establishment(s).

- dipping/spraying.

Vaccination in response to the outbreak:

*First administrative division*	*Species*	*Total number of vaccinated animals*	*Details of the vaccine*
Tibet Autonomous Region	avi	...	monovalent inactivated vaccine against subtype H5N2

Treatment of affected animals: no.

Vaccination prohibited: no.

(1) RT-PCR: reverse transcriptase - polymerase chain reaction

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