OIE: Highly pathogenic avian influenza, Vietnam

Information received on 02/03/2012 from Dr Nam Hoang Van, Director General, Department of Animal Health, Ministry of Agriculture and Rural Development , Hanoi, Vietnam

Summary

Report type	Follow-up report No. 68
Start date	07/12/2006
Date of first confirmation of the event	19/12/2006
Report date	02/03/2012
Date submitted to OIE	02/03/2012
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) Follow-up report No. 33 (05/11/2009) Follow-up report No. 34 (13/12/2009) Follow-up report No. 35 (16/12/2009) Follow-up report No. 36 (27/12/2009) Follow-up report No. 37 (24/01/2010) Follow-up report No. 38 (28/01/2010) Follow-up report No. 39 (13/02/2010) Follow-up report No. 40 (03/03/2010) Follow-up report No. 41 (24/03/2010) Follow-up report No. 42 (10/04/2010) Follow-up report No. 43 (29/04/2010) Follow-up report No. 44 (17/08/2010) Follow-up report No. 45 (04/12/2010) Follow-up report No. 46 (23/02/2011) Follow-up report No. 47 (08/03/2011) Follow-up report No. 48 (30/03/2011) Follow-up report No. 49 (18/04/2011) Follow-up report No. 50 (21/04/2011) Follow-up report No. 51 (26/04/2011) Follow-up report No. 52 (16/05/2011) Follow-up report No. 53 (07/06/2011) Follow-up report No. 54 (18/07/2011) Follow-up report No. 55 (04/08/2011) Follow-up report No. 56 (05/09/2011) Follow-up report No. 57 (10/11/2011) Follow-up report No. 58 (03/02/2012) Follow-up report No. 59 (06/02/2012) Follow-up report No. 60 (08/02/2012) Follow-up report No. 61 (10/02/2012) Follow-up report No. 62 (13/02/2012) Follow-up report No. 63 (14/02/2012) Follow-up report No. 64 (15/02/2012) Follow-up report No. 65 (18/02/2012) Follow-up report No. 66 (21/02/2012) Follow-up report No. 67 (24/02/2012) Follow-up report No. 68 (02/03/2012)

New outbreaks

Outbreak 1

Tien An, Tien An, Yen Hung, Quang Ninh

Date of start of the outbreak

21/02/2012

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Village

Affected animals

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	430	300	200	230	0

Summary of outbreaks

Total outbreaks: 1

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	69.77%	46.51%	66.67%	100.00%

* Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology

Source of the outbreak(s) or origin of infection

Unknown or inconclusive

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

RAHO 2 (National laboratory)

Tests and results

Species	Test	Test date	Result
Birds	reverse transcription - polymerase chain reaction (RT-PCR)	24/02/2012	Positive

Future Reporting

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