OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CHINA Follow-up report No. 9

OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CHINA Follow-up report No. 9
submited by kickingbird at Nov, 25, 2005 13:49 PM from OIE

Information received on 18, 20, 22 and 23 November 2005 from Mr Jia Youling, Director General, Veterinary Bureau, Ministry of Agriculture, Beijing:

End of previous report period: 17 November 2005 (see Disease Information, 18 [46], 435, dated 18 November 2005).

End of this report period: 23 November 2005.

Precise identification of agent: highly pathogenic avian influenza virus subtype H5N1.

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 epidemiological unit*	*Name of the location*	*Date of start of the outbreak*	*Species*	*Number of animals in the outbreaks*
*First administrative division*	*Lower administrative division*	*Type of epidemiological unit*	*Name of the location*	*Date of start of the outbreak*	*Species*	*susceptible*	*cases*	*deaths*	*destroyed*	*slaughtered*
Hubei province	Shishou city	village	Swan economic developing area	Nov. 2005	avi	7,300	3,500	3,500	3,800	0
Inner Mongolia autonomous region	Molidawa Dawo´er autonomous county	village	Wulan	15 Nov. 2005	avi		176	176	3,202	0
Ningxia autonomous region	Yinchuan city	village	Shangqian Cheng	17 Nov. 2005	avi	1,130	294	230	900	0
Shanxi province	Xiaoyi city	village	Gaoyang	10 Nov. 2005	avi	9,386	8,103	8,103	1,283	0
Xinjiang autonomous region	Miquan city	village	Niuzhuangzi	15 Nov. 2005	avi	6,120	2,064	2,064	4,056	0
Xinjiang autonomous region	Urumchi city	village	Daban Cheng	16 Nov. 2005	avi	125	38	38	87	0
Xinjiang autonomous region	Urumchi city	village	Wulabo	12 Nov. 2005	avi	56	8	8	48	0
Yunnan province	Chuxiong city	village	Hehua	17 Nov. 2005	avi	11,000	2,500	2,500	8,500	0

Description of affected population in the new outbreaks: chickens and geese.

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⁾.

16-23 Nov. 2005

positive

intravenous pathogenicity index (IVPI) test

16-23 Nov. 2005

positive (highly pathogenic)

Source of new outbreaks: contact with wild birds.

Control measures undertaken:

- stamping out applied to 254,464 birds around the outbreaks;

- quarantine;

- movement control inside the country;

- screening;

- zoning;

- vaccination;

- disinfection of infected premises/establishments;

- dipping/spraying.

Final report: no.

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

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