Highly pathogenic avian influenza,
Information received on 12/07/2017 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoļ, Vietnam
Report type Immediate notification
Date of start of the event 04/07/2017
Date of confirmation of the event 06/07/2017
Report date 11/07/2017
Date submitted to OIE 12/07/2017
Date event resolved 25/07/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 26/05/2017
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 (11/07/2017)
Follow-up report No. 1 (27/07/2017)
New outbreaks (1)
Outbreak 1 Liem Thuan, Liem Thuan, Thanh Liem, Ha Nam
Date of start of the outbreak 04/07/2017
Outbreak status Resolved (25/07/2017)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1135 500 300 835 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1135 500 300 835 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 44.05% 26.43% 60.00% 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
  • Movement control inside the country
  • Vaccination in response to the outbreak (s)
  • Surveillance outside containment and/or protection zone
  • Stamping out
  • Disinfection
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Center for Veterinary Diagnosis (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 06/07/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations