Highly pathogenic avian influenza,
Vietnam
Information received on 17/02/2020 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 11/02/2020
Date of confirmation of the event 14/02/2020
Report date 17/02/2020
Date submitted to OIE 17/02/2020
Date event resolved 19/03/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 04/06/2019
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (17/02/2020)
Follow-up report No. 1 (25/02/2020)
Follow-up report No. 2 (28/03/2020)
New outbreaks (2)
Outbreak 1 Hoa An, Hoa An, Cau Ke, Tra Vinh
Date of start of the outbreak 11/02/2020
Outbreak status Resolved (11/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1500 500 400 1100 0
Outbreak 2 Chau Dien, Chau Dien, Cau Ke, Tra Vinh
Date of start of the outbreak 11/02/2020
Outbreak status Resolved (11/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 204 190 14 190 0
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1704 690 414 1290 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 40.49% 24.30% 60.00% 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
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Stamping out
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • 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 (RAHO7) (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 14/02/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations