Highly pathogenic avian influenza,
Information received on 25/03/2017 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoļ, Vietnam
Report type Follow-up report No. 6
Date of start of the event 14/02/2017
Date of confirmation of the event 15/02/2017
Report date 25/03/2017
Date submitted to OIE 25/03/2017
Date event resolved 26/05/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 10/2016
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (19/02/2017)
Follow-up report No. 1 (21/02/2017)
Follow-up report No. 2 (23/02/2017)
Follow-up report No. 3 (09/03/2017)
Follow-up report No. 4 (12/03/2017)
Follow-up report No. 5 (22/03/2017)
Follow-up report No. 6 (25/03/2017)
Follow-up report No. 7 (28/03/2017)
Follow-up report No. 8 (07/04/2017)
Follow-up report No. 9 (14/04/2017)
Follow-up report No. 10 (19/04/2017)
Follow-up report No. 11 (26/04/2017)
Follow-up report No. 12 (27/04/2017)
Follow-up report No. 13 (02/05/2017)
Follow-up report No. 14 (04/05/2017)
Follow-up report No. 15 (15/05/2017)
Follow-up report No. 16 (18/05/2017)
Follow-up report No. 17 (21/05/2017)
Follow-up report No. 18 (26/05/2017)
New outbreaks (1)
Outbreak 1 Vi Binh, Vi Binh, Vi Thuy, Hau Giang
Date of start of the outbreak 20/03/2017
Outbreak status Resolved (12/04/2017)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 891 200 200 691 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 891 200 200 691 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 22.45% 22.45% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Vaccination in response to the outbreak (s)
  • Disinfection
  • Stamping out
  • Surveillance within containment and/or protection zone
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Regional Animal Health Office 7 (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 23/03/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations