Low pathogenic avian influenza (poultry), South Africa (OIE, June 19 2012, edited): 2 New H7N1 Outbreaks

[Giuseppe]

[Source: OIE, full page: (LINK). Edited.]


Low pathogenic avian influenza (poultry), South Africa


Information received on 19/06/2012 from Dr Bothle Michael Modisane, Chief Director , Department of Agriculture, Forestry and Fisheries, Animal Production and Health, PRETORIA, South Africa

• Summary
  • Report type Immediate notification
  • Start date 24/02/2012
  • Date of first confirmation of the event 01/06/2012
  • Report date 19/06/2012
  • Date submitted to OIE 19/06/2012
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 13/01/2012
  • Manifestation of disease Sub-clinical infection
  • Causal agent Low pathogenic avian influenza virus
  • Serotype H7N1
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to the whole country
• New outbreaks
  • Outbreak 1 (LPAI_2012_002) LPAI_2012_002, Hessequa, WESTERN CAPE PROVINCE
    • Date of start of the outbreak 25/04/2012
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 340 ? 34 ? 0 ? 0 ? 0
      • Affected Population: Commercial ostrich farm. Virus isolated and sequenced
  • Outbreak 2 (LPAI_2012_001) LPAI_2012_001, Camdeboo, EASTERN CAPE PROVINCE
    • Date of start of the outbreak 24/02/2012
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 1493 ? 10 ? 0 ? 0 ? 1493
      • Affected Population: Commercial ostrich farm.
• Summary of outbreaks
  • Total outbreaks: 2
  • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
    • Birds ? 1833 ? 44 ? 0 ? 0 ? 1493
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 2.40% - 0.00% - 0.00% - 81.45%
    • * 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
  • LPAI infection picked up due to routine surveillance for HPAI.
  • Note by the OIE Animal Health Information Department:
    • H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 10.4. on avian influenza of the Terrestrial Animal Health Code (2011).
• Control measures
  • Measures applied
    • Quarantine
    • Movement control inside the country
    • Screening
    • Disinfection of infected premises/establishment(s)
    • Modified stamping out
    • Vaccination prohibited
    • No treatment of affected animals
  • Measures to be applied
    • No other measures
• Diagnostic test results
  • Laboratory name and type Agricultural Research Council - Onderstepoort Veterinary Institute (ARC ? OVI) (National laboratory)
    • Tests and results: Species ? Test - Test date ? Result
      • Birds - virus sequencing - 01/06/2012 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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