Information received on 23/12/2020 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. 5
Date of start of the event
03/11/2020
Date of confirmation of the event
08/11/2020
Report date
23/12/2020
Date submitted to OIE
23/12/2020
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
26/07/2017
Manifestation of disease
Sub-clinical infection
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)
New outbreaks (8)

Outbreak 1 (WB 2020-01)
Nr Stroud, Gloucestershire, England
Date of start of the outbreak
21/11/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Canada Goose:Branta canadensis(Anatidae)

1
1
0
0
Mute Swan:Cygnus olor(Anatidae)

2
2
0
0
Outbreak 2 (WB-2020-47)
Sunderland, Tyne and Wear, England
Date of start of the outbreak
01/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Canada Goose:Branta canadensis(Anatidae)

1
1
0
0
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

1
1
0
0
Outbreak 3 (WB 2020-08)
Godmanchester, Huntingdonshire, England
Date of start of the outbreak
08/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 4 (WB 2020-11)
Peterborough, Fenland, England
Date of start of the outbreak
10/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 5 (WB 2020-30)
Kings Lynn, Kings Lynn and West Norfolk, England
Date of start of the outbreak
12/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Outbreak 6 (WB 2020-04)
Nr Lancashire, Lancashire, England
Date of start of the outbreak
13/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Greylag Goose:Anser anser(Anatidae)

1
1
0
0
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Outbreak 7 (WB 2020-32)
Stratford-on-Avon, Stratford-on-Avon, England
Date of start of the outbreak
14/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 8 (WB 2020-23)
Dorchester, Dorset, England
Date of start of the outbreak
15/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

3
3
0
0
Summary of outbreaks
Total outbreaks: 8
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Canada Goose:Branta canadensis(Anatidae)

2
2
0
0
Mute Swan:Cygnus olor(Anatidae)

9
9
0
0
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

1
1
0
0
Whooper Swan:Cygnus cygnus(Anatidae)

2
2
0
0
Greylag Goose:Anser anser(Anatidae)

1
1
0
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Canada Goose:Branta canadensis(Anatidae)
**
**
100.00%
**
Mute Swan:Cygnus olor(Anatidae)
**
**
100.00%
**
Cygnus (unidentified):Cygnus (incognita)(Anatidae)
**
**
100.00%
**
Whooper Swan:Cygnus cygnus(Anatidae)
**
**
100.00%
**
Greylag Goose:Anser anser(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
Agri-Food and Biosciences Institute (National laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
20/11/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Canada Goose
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
12/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
gene sequencing
14/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
reverse transcription - polymerase chain reaction (RT-PCR)
11/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Greylag Goose
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Greylag Goose
reverse transcription - polymerase chain reaction (RT-PCR)
22/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
13/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
09/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
12/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
22/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
gene sequencing
16/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
21/12/2020
Positive
Animal and Plant Health Agency (APHA), Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.