Pandemic Influenza A H1N1 (2009), United Kingdom (WAHID Interface - OIE World Animal Health Information Database, 12/4/09, edited)

[Giuseppe]

Pandemic Influenza A H1N1 (2009), United Kingdom (WAHID Interface - OIE World Animal Health Information Database, 12/4/09, edited)

Pandemic Influenza A H1N1 (2009), United Kingdom

Information received on 04/12/2009 from Dr Nigel Gibbens, Chief Veterinary Officer, Department for Environment, Food and Rural Affairs, Department for Environment, Food and Rural Affairs, LONDON, United Kingdom

• Summary
  • Report type Follow-up report No. 11
  • Start date 18/08/2009
  • Date of first confirmation of the event 16/09/2009
  • Report date 04/12/2009
  • Date submitted to OIE 04/12/2009
  • Reason for notification Emerging disease
  • Morbidity 51 %
  • Mortality 0.27 %
  • Zoonotic impact Refer to OIE guidance/opinion
  • Causal agent Pandemic H1N1 virus (2009)
  • Related reports
    • Immediate notification (18/09/2009)
    • Follow-up report No. 1 (25/09/2009)
    • Follow-up report No. 2 (02/10/2009)
    • Follow-up report No. 3 (09/10/2009)
    • Follow-up report No. 4 (16/10/2009)
    • Follow-up report No. 5 (23/10/2009)
    • Follow-up report No. 6 (30/10/2009)
    • Follow-up report No. 7 (06/11/2009)
    • Follow-up report No. 8 (13/11/2009)
    • Follow-up report No. 9 (20/11/2009)
    • Follow-up report No. 10 (27/11/2009)
    • Follow-up report No. 11 (04/12/2009)

• New outbreaks
  • Outbreak 1 (GB 1) - Norfolk, ENGLAND
    • Date of start of the outbreak 02/12/2009
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Swine - 2000 - 58 - 0 - 1 - 0
      • Affected Population A commercial weaner-breeder farm. Affected sows had loss of appetite and lethargy of 1-4 days duration, with very few exhibiting respiratory signs. All pigs recovered fully. One sow was slaughtered for diagnostic purposes.
  • Outbreak 2 (NI Flu 5) - County Tyrone, Castlederg, NORTHERN IRELAND
    • Date of start of the outbreak 27/11/2009
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
      • Swine - 1700 - ... - ... - ... - ...
      • Affected Population 170 sow birth to bacon unit. Incidental finding following investigation of another disease in pigs. Investigations are continuing.

• Summary of outbreaks
  • Total outbreaks: 2
  • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
    • Swine - 3700 - 58 ** - 0 - 1 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Swine - ** - ** - ** - **
    • * 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
  • Outbreak in Castlederg (27 November 2009):
    • Investigations are continuing
  • Outbreak in Norfolk (2 December 2009):
    • The Veterinary Laboratories Agency (VLA) is conducting an epidemiological investigation of this event. Last ?movement on? of pigs was mid November. Voluntary movement controls have been instituted by the farm in line with the agreed UK Industry Code of Practice.

• Control measures
  • Measures applied
    • No vaccination
    • Treatment of affected animals (Oral antibiotics)
  • Measures to be applied
    • No other measures

• Diagnostic test results
  • Laboratory name and type Veterinary Sciences Division, Stormont, Northern Ireland (National laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Swine - gene sequencing - 27/11/2009 - Positive
      • Swine - real-time PCR - 25/11/2009 - Positive
  • Laboratory name and type Veterinary Laboratories Agency (VLA), Weybridge (OIE?s Reference Laboratory)
    • Tests and results: Species - Test - Test date - Result
      • Swine - gene sequencing - 02/12/2009 - Positive
      • Swine - real-time PCR - 27/11/2009 - Positive

• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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<cite cite="http://www.oie.int/wahis/public.php?page=single_report&pop=1&reportid=8726">WAHID Interface - OIE World Animal Health Information Database</cite>