Highly pathogenic avian influenza,
Vietnam
Information received on 10/05/2020 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 Follow-up report No. 8
Date of start of the event 18/01/2020
Date of confirmation of the event 21/01/2020
Report date 10/05/2020
Date submitted to OIE 10/05/2020
Date event resolved 06/06/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 15/11/2019
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
Related reports Immediate notification (04/02/2020)
Follow-up report No. 1 (09/02/2020)
Follow-up report No. 2 (10/02/2020)
Follow-up report No. 3 (12/02/2020)
Follow-up report No. 4 (17/02/2020)
Follow-up report No. 5 (25/02/2020)
Follow-up report No. 6 (28/03/2020)
Follow-up report No. 7 (11/04/2020)
Follow-up report No. 8 (10/05/2020)
Follow-up report No. 9 (02/07/2020)
New outbreaks (2)
Outbreak 1 Yen Dong, Yen Dong, Yen Mo, Ninh Binh
Date of start of the outbreak 14/04/2020
Outbreak status Resolved (14/05/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 5833 1400 750 5083 0
Outbreak 2 Vien An, Vien An, Ung Hoa, Ha Noi
Date of start of the outbreak 06/05/2020
Outbreak status Resolved (06/06/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 15305 9000 750 14555 0
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 21138 10400 1500 19638 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 49.20% 7.10% 14.42% 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
  • Disinfection
  • Stamping out
  • Surveillance outside containment and/or protection zone
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations