Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
United Kingdom
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)
Follow-up report No. 7 (08/01/2021)
Follow-up report No. 8 (15/01/2021)
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.
Map of outbreak locations