OIE Report: Vietnam

Information received on 06/02/2009 from Mr Bui Quang Anh, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, HANOI, Vietnam

Highly pathogenic avian influenza, Vietnam

Information received on 06/02/2009 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. 26
Start date 07/12/2006
Date of first confirmation of the event 19/12/2006
Report date 06/02/2009
Date submitted to OIE 06/02/2009
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
-snip- [related reports]
-- New outbreaks

- Outbreak 1 - Vien Binh, Vien Binh, My Xuyen, SOC TRANG
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 682 - 527 - 489 - 193 - 0

- Outbreak 2 - Minh Son, Minh Son, Do Luong, NGHE AN
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 500 - 164 - 164 - 236 - 0

- Outbreak 3 - Tan Loc Bac, Tan Loc Bac, Thoi Binh, CA MAU
Date of start of the outbreak 03/02/2009
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 950 - 300 - 25 - 925 - 0

-- Summary of outbreaks
Total outbreaks: 3
Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 2132 - 991 - 678 - 1354 - 0
Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - 46.48% - 31.80% - 68.42% - 95.31%
* 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)

-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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