Information received on 18/12/2020 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. 4
Date of start of the event
03/11/2020
Date of confirmation of the event
08/11/2020
Report date
18/12/2020
Date submitted to OIE
18/12/2020
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)
New outbreaks (27)

Outbreak 1 (WB 2020/15)
ULVERSTON, England
Date of start of the outbreak
18/11/2020
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)

6
6
0
0
Outbreak 2 (WB 2020 Northern Ireland 3)
Kilrea, Northern Ireland
Date of start of the outbreak
18/11/2020
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)

3
3
0
0
Outbreak 3 (WB 2020/06)
POOLE, England
Date of start of the outbreak
26/11/2020
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
Outbreak 4 (WB 2020/40)
CUPAR, FIFE, Scotland
Date of start of the outbreak
29/11/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

1
1
0
0
Outbreak 5 (WB2020/11)
Peterborough, Fenland, England
Date of start of the outbreak
30/11/2020
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 2020/11)
Peterborough, Fenland, 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
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 7 (WB 2020/38)
MELTON MOWBRAY, 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
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 8 (WB 2020/39)
BEDFORD, 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
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 9 (WB 2020/46)
Chester Le street, Durham, 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
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

5
5
0
0
Outbreak 10 (WB 2020/49)
Alnwick, Northumberland , 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
Outbreak 11 (WB 2020/03)
Nr Weymouth, Dorset, England
Date of start of the outbreak
02/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

2
2
0
0
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

3
3
0
0
Outbreak 12 (WB-2020-37)
Fareham, Fareham, England
Date of start of the outbreak
02/12/2020
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
Outbreak 13 (WB 2020/28)
Louth, North Kesterven, England
Date of start of the outbreak
03/12/2020
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 14 (WB 2020/48)
Highlands, Scotland
Date of start of the outbreak
03/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Greylag Goose:Anser anser(Anatidae)

1
1
0
0
Outbreak 15 (WB 2020/41)
Fraserburgh, Aberdeen, Scotland
Date of start of the outbreak
03/12/2020
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)

3
3
0
0
Outbreak 16 (WB 2020/45)
Ryde, Isle of Wight, England
Date of start of the outbreak
06/12/2020
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 17 (WB 2020/11)
Peterborough, Fenland, England
Date of start of the outbreak
06/12/2020
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
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Outbreak 18 (WB 2020/30)
Kings Lynn, Kings Lynn and West Norfolk, England
Date of start of the outbreak
07/12/2020
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 19 (WB 2020/30)
Kings Lynn, Kings Lynn and West Norfolk, 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
Whooper Swan:Cygnus cygnus(Anatidae)

1
1
0
0
Outbreak 20 (WB 2020/11)
Peterborough, Fenland, 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 21 (WB 2020/11)
Peterborough, Fenland, 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 22 (WB 2020/03)
Nr Weymouth, Dorset, England
Date of start of the outbreak
08/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 23 (AIV 2020-10)
Droitwich Spa, Wychavon, 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
Mallard:Anas platyrhynchos(Anatidae)
12
0
0
12
0
Canada Goose:Branta canadensis(Anatidae)
5
0
0
5
0
Mute Swan:Cygnus olor(Anatidae)
26
18
15
11
0
Black Swan:Cygnus atratus(Anatidae)
1
0
0
1
0
Outbreak 24 (WB 2020/51)
Cheadle, Stockport, 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
Canada Goose:Branta canadensis(Anatidae)

1
1
0
0
Outbreak 25 (WB 2020/23)
Dorchester, Dorset, England
Date of start of the outbreak
11/12/2020
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
Outbreak 26 (WB 2020/01)
Nr Stroud, Gloucestershire, England
Date of start of the outbreak
15/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1
0
0
Outbreak 27 (WB 2020/01)
Nr Stroud, Gloucestershire, England
Date of start of the outbreak
16/12/2020
Outbreak status
Continuing (or date resolved not provided)
Epidemiological unit
Natural park
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

1
1
0
0
Summary of outbreaks
Total outbreaks: 27
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)
26
38
35
11
0
Whooper Swan:Cygnus cygnus(Anatidae)

11
11
0
0
Canada Goose:Branta canadensis(Anatidae)
5
4
4
5
0
Cygnus (unidentified):Cygnus (incognita)(Anatidae)

10
10
0
0
Greylag Goose:Anser anser(Anatidae)

1
1
0
0
Mallard:Anas platyrhynchos(Anatidae)
12
0
0
12
0
Black Swan:Cygnus atratus(Anatidae)
1
0
0
1
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Mute Swan:Cygnus olor(Anatidae)
**
**
92.11%
**
Whooper Swan:Cygnus cygnus(Anatidae)
**
**
100.00%
**
Canada Goose:Branta canadensis(Anatidae)
**
**
100.00%
**
Cygnus (unidentified):Cygnus (incognita)(Anatidae)
**
**
100.00%
**
Greylag Goose:Anser anser(Anatidae)
**
**
100.00%
**
Mallard:Anas platyrhynchos(Anatidae)
0.00%
0.00%
-
100.00%
Black Swan:Cygnus atratus(Anatidae)
0.00%
0.00%
-
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
Weybridge (Regional Reference Laboratory)
Canada Goose
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Canada Goose
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Canada Goose
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Cygnus (unidentified)
reverse transcription - polymerase chain reaction (RT-PCR)
11/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Greylag Goose
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
09/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Whooper Swan
gene sequencing
16/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
07/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
Weybridge (Regional Reference Laboratory)
Whooper Swan
reverse transcription - polymerase chain reaction (RT-PCR)
14/12/2020
Positive
WEYBRIDGE (OIE Reference Laboratory)
Canada Goose
reverse transcription - polymerase chain reaction (RT-PCR)
12/12/2020
Positive
WEYBRIDGE (OIE Reference Laboratory)
Mute Swan
gene sequencing
13/12/2020
Positive
WEYBRIDGE (OIE Reference Laboratory)
Mute Swan
reverse transcription - polymerase chain reaction (RT-PCR)
12/12/2020
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.