OIE: Highly pathogenic avian influenza(H5N8), United Kingdom

Information received on 12/11/2020 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. 2
Date of start of the event 24/10/2020
Date of confirmation of the event 02/11/2020
Report date 12/11/2020
Date submitted to OIE 12/11/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 06/2017
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (03/11/2020)
Follow-up report No. 1 (10/11/2020)
Follow-up report No. 2 (12/11/2020)
New outbreaks (1)
Outbreak 1 (AIV 2020/03) Hereford, England
Date of start of the outbreak 09/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 46000 6450 6450 0 0
Affected population Broiler breeder
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 46000 6450 6450 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 14.02% 14.02% 100.00% 14.02%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Contact with wild species
Epidemiological comments Epidemiological investigation is ongoing
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Zoning
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds gene sequencing 12/11/2020 Positive
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 10/11/2020 Positive
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 11/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.