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 Follow-up report No. 4
Date of start of the event 18/01/2020
Date of confirmation of the event 21/01/2020
Report date 17/02/2020
Date submitted to OIE 17/02/2020
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 (6)
Outbreak 1 Van Thang, Van Thang, Nong Cong, Thanh Hoa
Date of start of the outbreak 12/02/2020
Outbreak status Resolved (12/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1500 1000 500 1000 0
Outbreak 2 Vinh Phuc, Vinh Phuc, Vinh Loc, Thanh Hoa
Date of start of the outbreak 12/02/2020
Outbreak status Resolved (12/03/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 3167 1000 500 2667 0
Outbreak 3 Tan Binh, Tan Binh, Nhu Xuan, Thanh Hoa
Date of start of the outbreak 12/02/2020
Outbreak status Resolved (12/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1298 500 300 998 0
Outbreak 4 Dong Hai, Dong Hai, Thanh Hoa, Thanh Hoa
Date of start of the outbreak 12/02/2020
Outbreak status Resolved (12/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 970 500 300 670 0
Outbreak 5 Quynh Hung, Quynh Hung, Quynh Luu, Nghe An
Date of start of the outbreak 12/02/2020
Outbreak status Resolved (12/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 161 100 50 111 0
Outbreak 6 Quang Hoa, Quang Hoa, Quang Xuong, Thanh Hoa
Date of start of the outbreak 14/02/2020
Outbreak status Resolved (14/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 991 100 100 891 0
Summary of outbreaks Total outbreaks: 6
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 8087 3200 1750 6337 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 39.57% 21.64% 54.69% 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