Information received on 31/12/2020 from Dr Christine Middlemiss, Chief Veterinary Officer, DEFRA, Department for Environment,Food and Rural Affairs , London, United Kingdom
Summary
Report type
Follow-up report No. 6
Date of start of the event
03/11/2020
Date of confirmation of the event
08/11/2020
Report date
31/12/2020
Date submitted to OIE
31/12/2020
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
26/07/2017
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic influenza A virus
Serotype
H5N8
Nature of diagnosis
Laboratory (basic), Laboratory (advanced)
This event pertains to
a defined zone within the country
Related reports
Immediate notification (09/11/2020)
Follow-up report No. 1 (12/11/2020)
Follow-up report No. 2 (18/11/2020)
Follow-up report No. 3 (11/12/2020)
Follow-up report No. 4 (18/12/2020)
Follow-up report No. 5 (23/12/2020)
Follow-up report No. 6 (31/12/2020)
New outbreaks (7)

Outbreak 1 (WB 2020/23)
Dorchester, Dorset, England
Date of start of the outbreak
17/11/2020
Outbreak status
Resolved (17/11/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

3
3
0
0
Outbreak 2 (WB 2020/57)
Alloa, Clackmanshire, Scotland
Date of start of the outbreak
11/12/2020
Outbreak status
Resolved (11/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 3 (WB 2020/57)
Alloa, Clackmanshire, Scotland
Date of start of the outbreak
15/12/2020
Outbreak status
Resolved (15/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

2
2
0
0
Outbreak 4 (WB 2020/56)
Appleby, Eden, England
Date of start of the outbreak
17/12/2020
Outbreak status
Resolved (17/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

2
2
0
0
Outbreak 5 (WB 2020/39)
Bedford, Bedford, England
Date of start of the outbreak
18/12/2020
Outbreak status
Resolved (18/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 6 (WB 2020/32)
Stratford-on-Avon, Stratford-on-Avon, England
Date of start of the outbreak
21/12/2020
Outbreak status
Resolved (21/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Canada Goose:Branta canadensis(Anatidae)

1
1
0
0
Outbreak 7 (WB 2020/57)
Alloa, Clackmanshire, Scotland
Date of start of the outbreak
21/12/2020
Outbreak status
Resolved (21/12/2020)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Summary of outbreaks
Total outbreaks: 7
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

10
10
0
0
Canada Goose:Branta canadensis(Anatidae)

1
1
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Mute Swan:Cygnus olor(Anatidae)
**
**
100.00%
**
Canada Goose:Branta canadensis(Anatidae)
**
**
100.00%
**
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
Contact with wild species

Control measures
Measures applied
Official disposal of carcasses, by-products and waste
Vaccination prohibited
No treatment of affected animals
Measures to be applied
Stamping out
Disinfection
Diagnostic test results
Laboratory name and type
Species
Test
Test date
Result
Weybridge (OIE Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
30/12/2020
Positive
Weybridge (OIE Reference Laboratory)
Mute Swan
gene sequencing
24/12/2020
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.