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2020-1-27 2:46:04


OIE: Low pathogenic avian influenza (poultry), United Kingdom
submited by kickingbird at Dec, 12, 2019 17:52 PM from OIE

Information received on 11/12/2019 from Dr Christine Middlemiss, Chief Veterinary Officer, DEFRA, Department for Environment,Food and Rural Affairs , London, United Kingdom
Summary
Report type Immediate notification
Date of start of the event 04/12/2019
Date of confirmation of the event 10/12/2019
Report date 11/12/2019
Date submitted to OIE 11/12/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 20/01/2016
Manifestation of disease Clinical disease
Causal agent Low pathogenic avian influenza virus
Serotype H5
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 (AIV 2019/01) Mid Suffolk, England
Date of start of the outbreak 04/12/2019
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 27000 0 0
Affected population Flock of approximately 27,000 (45 weeks in lay) housed broiler breeder chickens.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 27000 ** 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 0.00% ** **
*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
  • Unknown or inconclusive
Epidemiological comments Following reports of a drop in egg production, a veterinary inquiry was undertaken and official tests identified the presence of H5 LPAI. Stamping out is underway. Disposal of the birds, cleansing and disinfection are being arranged. Updates will be provided in the weekly reports as further information becomes available.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Traceability
  • Quarantine
  • Zoning
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds haemagglutination inhibition test (HIT) 09/12/2019 Positive
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds intravenous pathogenicity index (IVPI) test Pending
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds neuraminidase inhibition assay Pending
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds nucleotide sequencing 10/12/2019 Positive
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 10/12/2019 Positive
Animal and Plant Health Agency (APHA), Weybridge (OIE Reference Laboratory) Birds virus isolation Pending
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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