OIE: Highly pathogenic avian influenza(H5N6), Vietnam

Information received on 11/09/2020 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hano?, Vietnam
Summary
Report type Immediate notification
Date of start of the event 21/08/2020
Date of confirmation of the event 31/08/2020
Report date 11/09/2020
Date submitted to OIE 11/09/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 29/07/2020
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N6
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 Ngu Doan, Ngu Doan, Kien Thuy, Hai Phong
Date of start of the outbreak 21/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 6171 550 350 5821 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 6171 550 350 5821 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 8.91% 5.67% 63.64% 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
Epidemiological comments Vaccination was only applied for the live poultry in surrounding areas of affected flocks.
Control measures
Measures applied
  • Vaccination in response to the outbreak (s)
  • Surveillance outside containment and/or protection zone
  • Stamping out
  • 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 No.2 (RAHO2) (Regional Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 31/08/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.