Highly pathogenic avian influenza,
United Kingdom
Information received on 08/01/2021 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. 8
Date of start of the event 24/10/2020
Date of confirmation of the event 02/11/2020
Report date 08/01/2021
Date submitted to OIE 08/01/2021
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)
Follow-up report No. 3 (03/12/2020)
Follow-up report No. 4 (11/12/2020)
Follow-up report No. 5 (18/12/2020)
Follow-up report No. 6 (22/12/2020)
Follow-up report No. 7 (31/12/2020)
Follow-up report No. 8 (08/01/2021)
Follow-up report No. 9 (15/01/2021)
New outbreaks (1)
Outbreak 1 (AI/35/2020/IP1) Nr Clough, Northern Ireland
Date of start of the outbreak 27/12/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 32347 197 197 32150 0
Affected population Commercial egg layer rearing pullets 14 weeks old
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 32347 197 197 32150 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.61% 0.61% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Epidemiological investigation ongoing on the latest case in Northern Ireland.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Traceability
  • Official destruction of animal products
  • Stamping out
  • Zoning
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Agri-Food and Biosciences Institute (National laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 01/01/2021 Positive
Weybridge (OIE Reference Laboratory) Birds gene sequencing 06/01/2021 Positive
Weybridge (OIE Reference Laboratory) Birds reverse transcription - polymerase chain reaction (RT-PCR) 06/01/2021 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations