Highly pathogenic avian influenza,
Vietnam
Information received on 28/03/2020 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. 6
Date of start of the event 18/01/2020
Date of confirmation of the event 21/01/2020
Report date 28/03/2020
Date submitted to OIE 28/03/2020
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)
New outbreaks (5)
Outbreak 1 Tot Dong, Tot Dong, Chuong My, Ha Noi
Date of start of the outbreak 02/02/2020
Outbreak status Resolved (02/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 648 150 50 598 0
Outbreak 2 Tien Thang, Tien Thang, Me Linh, Ha Noi
Date of start of the outbreak 20/02/2020
Outbreak status Resolved (20/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 438 50 20 418 0
Outbreak 3 Quang Trung, Quang Trung, Bim Son, Thanh Hoa
Date of start of the outbreak 22/02/2020
Outbreak status Resolved (22/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1000 700 150 850 0
Outbreak 4 Sao Vang, Sao Vang, Tho Xuan, Thanh Hoa
Date of start of the outbreak 24/02/2020
Outbreak status Resolved (24/03/2020)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2501 1200 189 2312 0
Outbreak 5 Mai Lam, Mai Lam, Tinh Gia, Thanh Hoa
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 166 110 56 110 0
Summary of outbreaks Total outbreaks: 5
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 4753 2210 465 4288 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 46.50% 9.78% 21.04% 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
  • Stamping out
  • Disinfection
  • 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