Highly pathogenic avian influenza,
Vietnam
Information received on 03/08/2018 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoļ, Vietnam
Summary
Report type Immediate notification
Date of start of the event 28/07/2018
Date of confirmation of the event 30/07/2018
Report date 03/08/2018
Date submitted to OIE 03/08/2018
Date event resolved 10/01/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 19/03/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N6
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (03/08/2018)
Follow-up report No. 1 (21/09/2018)
Follow-up report No. 2 (18/10/2018)
Follow-up report No. 3 (02/11/2018)
Follow-up report No. 4 (05/11/2018)
Follow-up report No. 5 (22/12/2018)
Follow-up report No. 6 (18/01/2019)
New outbreaks (3)
Outbreak 1 Dien Lien, Dien Lien, Dien Chau, Nghe An
Date of start of the outbreak 28/07/2018
Outbreak status Resolved (28/08/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2400 90 90 2310 0
Affected population The affected population is backyard birds.
Outbreak 2 An Hong, An Hong, An Duong, Hai Phong
Date of start of the outbreak 28/07/2018
Outbreak status Resolved (28/08/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 4720 1000 500 4220 0
Affected population The affected population is backyard birds.
Outbreak 3 An Hung, An Hung, An Duong, Hai Phong
Date of start of the outbreak 30/07/2018
Outbreak status Resolved (30/08/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 5500 2000 1000 4500 0
Affected population The affected population is backyard birds.
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 12620 3090 1590 11030 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 24.48% 12.60% 51.46% 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
  • 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
Regional animal health offices 2 & 3 (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 30/07/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations