Published Date: 2005-10-22 23:50:00
Subject: PRO/AH/EDR> Avian influenza - Eurasia (21): China, Inner Mongolia, OIE
Archive Number: 20051022.3078
AVIAN INFLUENZA - EURASIA (21): CHINA, INNER MONGOLIA, OIE
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Date: Fri, 21 Oct 2005
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Source: OIE Disease Information 14 Oct 2005, Vol 18 No 42 [edited]
Highly Pathogenic Avian Influenza In China (People's Rep. Of )
Follow-up report No. 3
See also: 12 Aug 2005, 24 Jun 2005, 10 Jun 2005, 27 May 2005, 9 Jul 2004
Information received on 19 Oct 2005 from Mr Jia Youling, Director
General, Veterinary Bureau, Ministry of Agriculture, Beijing:
End of previous report period: 10 Aug 2005 (see Disease Information,
18 , 259, dated 12 Aug 2005).
End of this report period: 19 Oct 2005.
Precise identification of agent: highly pathogenic avian influenza
virus subtype H5.
Date of first confirmation of the event: 7 Jun 2005.
Nature of diagnosis: clinical, post-mortem and laboratory.
Details of new outbreak:
First administrative division : Inner Mongolia
Lower administrative division : Huhehot municipality
Type of epidemiological unit: village
Name of the location : Tengjiaying
Date of start of the outbreak : 14 Oct 2005
Number of animals in the outbreaks
susceptible / cases / deaths / destroyed / slaughtered
6000 / 2600 / 2600 / 3400 / 0
Description of affected population in the new outbreak: chickens and ducks.
Laboratory where diagnostic tests were performed: Harbin Veterinary
Research Institute, Chinese Academy of Agricultural Sciences, Harbin
(national reference laboratory for avian influenza)
Diagnostic tests used: - haemagglutination inhibition test;- RT-PCR(1).
Date: 19 Oct 2005
Diagnostic tests used: intravenous pathogenicity index (IVPI) test
Date: 19 Oct. 2005
Source of new outbreak: contact with wild animals. Migrating birds
often pass or congregate at a lake close to where the HPAI outbreak occurred.
Control measures undertaken:
- stamping out applied to the entire affected flock; killing and
destruction of 87 700 birds outside the outbreak;
- movement control inside the country;
- disinfection of infected premises/establishment(s);
Vaccination in response to the outbreak:
First administrative division: Inner Mongolia
Total number of birds vaccinated: 166 177
Details of the vaccine: monovalent inactivated vaccine against subtype H5N2
Final report: no.
(1) RT-PCR: reverse transcriptase - polymerase chain reaction
[This outbreak is located approximately 500 km west of Beijing in the
Eastern part of Inner Mongolia (Lat: 40 49 00 N Long: 111 37 00 E).
Of course, with no N characterization of the virus yet, we cannot say
it is the same virus we have been hearing about in Romania and Turkey.
It would not be surprising, however, because we have seen the H5N1 in
Novosibirsk, Russia, Qinghai Lake in China and Hovsgol, Mongolia
earlier this summer. Dots are beginning to fall in place. One
wonders how many of the recent outbreaks across Eurasia fall along
the migratory flight paths of wild birds residing in the big Asia
lakes this summer. I wouldn't be surprised if someone is mapping
that question right now and I would love to hear from them. - Mod PC]