Highly pathogenic avian influenza, Vietnam (WAHID Interface - OIE World Animal Health Information Database, June 26, 2009, edited)

[Giuseppe]

Highly pathogenic avian influenza, Vietnam (WAHID Interface - OIE World Animal Health Information Database, June 26, 2009, edited)

Highly pathogenic avian influenza, Vietnam

Information received on 26/06/2009 from Mr Bui Quang Anh, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, HANOI, Vietnam

-- Summary
Report type Follow-up report No. 32
Start date 07/12/2006
Date of first confirmation of the event 19/12/2006
Report date 26/06/2009
Date submitted to OIE 26/06/2009
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 10/08/2006
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus Serotype H5N1
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports * Immediate notification (19/12/2006)
* Follow-up report No. 1 (04/01/2007)
* Follow-up report No. 2 (17/01/2007)
* Follow-up report No. 3 (27/02/2007)
* Follow-up report No. 4 (23/03/2007)
* Follow-up report No. 5 (02/04/2007)
* Follow-up report No. 6 (17/05/2007)
* Follow-up report No. 7 (24/05/2007)
* Follow-up report No. 8 (07/06/2007)
* Follow-up report No. 9 (05/07/2007)
* Follow-up report No. 10 (14/09/2007)
* Follow-up report No. 11 (11/10/2007)
* Follow-up report No. 12 (31/10/2007)
* Follow-up report No. 13 (12/11/2007)
* Follow-up report No. 14 (07/01/2008)
* Follow-up report No. 15 (01/02/2008)
* Follow-up report No. 16 (23/02/2008)
* Follow-up report No. 17 (12/03/2008)
* Follow-up report No. 18 (01/04/2008)
* Follow-up report No. 19 (23/04/2008)
* Follow-up report No. 20 (14/07/2008)
* Follow-up report No. 21 (30/09/2008)
* Follow-up report No. 22 (27/11/2008)
* Follow-up report No. 23 (30/12/2008)
* Follow-up report No. 24 (07/01/2009)
* Follow-up report No. 25 (03/02/2009)
* Follow-up report No. 26 (06/02/2009)
* Follow-up report No. 27 (16/02/2009)
* Follow-up report No. 28 (22/02/2009)
* Follow-up report No. 29 (06/03/2009)
* Follow-up report No. 30 (10/04/2009)
* Follow-up report No. 31 (21/05/2009)
* Follow-up report No. 32 (26/06/2009)

-- New outbreaks

- Outbreak 1 - Lien Hoa, Yen Hoa, Yen Hung, QUANG NINH
Date of start of the outbreak 18/06/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 1830 - 650 - 504 - 1326 - 0
Affected population Birds including chickens, ducks and muscovy ducks of four small household farms were found dead.

Summary of outbreaks: Total outbreaks: 1
Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - 35.52% - 27.54% - 77.54% - 100.00%
* Removed from the susceptible population through death, destruction and/or slaughter

-- Epidemiology
Source of the outbreak(s) or origin of infection
* Introduction of new live animals
* Illegal movement of animals
* Fomites (humans, vehicles, feed, etc.)

-- Control measures
Measures applied
* Quarantine
* Movement control inside the country
* Disinfection of infected premises/establishment(s)
* Modified stamping out
* No vaccination
* No treatment of affected animals
Measures to be applied
* Screening
* Zoning
* Vaccination in response to the outbreak (s)

-- Diagnostic test results
Laboratory name and type Regional Animal Health Office No. 2 (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) - 18/06/2009 - Positive

-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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<cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=8230">WAHID Interface - OIE World Animal Health Information Database</cite>