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
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)
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
Continuing (or date resolved not provided)
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
Continuing (or date resolved not provided)
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
Continuing (or date resolved not provided)
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
Continuing (or date resolved not provided)
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
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.