Highly pathogenic avian influenza,
Vietnam
Information received on 11/04/2020 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. 7
Date of start of the event 18/01/2020
Date of confirmation of the event 21/01/2020
Report date 11/04/2020
Date submitted to OIE 11/04/2020
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 (10)
Outbreak 1 Lien Son, Lien Son, Luong Son, Hoa Binh
Date of start of the outbreak 25/02/2020
Outbreak status Resolved (25/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 12250 3500 300 9250 0
Outbreak 2 Tran Hung Dao, Tran Hung Dao, Ly Nhan, Ha Nam
Date of start of the outbreak 27/02/2020
Outbreak status Resolved (27/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1555 850 330 1225 0
Outbreak 3 Lien Son, Lien Son, Gia Vien, Ninh Binh
Date of start of the outbreak 02/03/2020
Outbreak status Resolved (02/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 260 60 30 230 0
Outbreak 4 Trung Nghia, Trung Nghia, Yen Phong, Bac Ninh
Date of start of the outbreak 02/03/2020
Outbreak status Resolved (02/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 281 30 20 261 0
Outbreak 5 Giang Son, Giang Son, Gia Binh, Bac Ninh
Date of start of the outbreak 04/03/2020
Outbreak status Resolved (04/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2184 380 350 1834 0
Outbreak 6 My Luong, My Luong, Chuong My, Ha Noi
Date of start of the outbreak 10/03/2020
Outbreak status Resolved (10/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 3567 950 650 2917 0
Outbreak 7 Dong Thanh, Dong Thanh, Yen Thanh, Nghe An
Date of start of the outbreak 27/03/2020
Outbreak status Resolved (27/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1930 365 365 1565 0
Outbreak 8 Quynh Vinh, Quynh Vinh, Hoang Mai, Nghe An
Date of start of the outbreak 27/03/2020
Outbreak status Resolved (27/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 795 160 100 695 0
Outbreak 9 Nghia Phong, Nghia Phong, Nghia Hung, Nam Dinh
Date of start of the outbreak 28/03/2020
Outbreak status Resolved (28/04/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 700 60 41 659 0
Outbreak 10 Minh Dan, Minh Dan, Ham Yen, Tuyen Quang
Date of start of the outbreak 02/04/2020
Outbreak status Resolved (02/05/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 196 42 35 161 0
Summary of outbreaks Total outbreaks: 10
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 23718 6397 2221 18797 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 26.97% 9.36% 34.72% 88.62%
*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