Highly pathogenic avian influenza,
Vietnam
Information received on 07/08/2020 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 23/07/2020
Date of confirmation of the event 25/07/2020
Report date 07/08/2020
Date submitted to OIE 07/08/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 06/06/2020
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (07/08/2020)
Follow-up report No. 1 (11/09/2020)
Follow-up report No. 2 (01/10/2020)
New outbreaks (1)
Outbreak 1 Chau Dien, Chau Dien, Cau Ke, Tra Vinh
Date of start of the outbreak 23/07/2020
Outbreak status Resolved (23/08/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1040 500 200 840 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1040 500 200 840 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 48.08% 19.23% 40.00% 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 permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Stamping out
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Regional Animal Health Office No.7 (RAHO7) (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 25/07/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations