Highly pathogenic avian influenza, South Africa (OIE, August 26 2011): 1 New H5N2 Poultry Outbreak

[Giuseppe]

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

Highly pathogenic avian influenza, South Africa


Information received on 26/08/2011 from Dr Bothle Michael Modisane, Chief Director , Department of Agriculture, Forestry and Fisheries, Animal Production and Health, PRETORIA, South Africa

• Summary
  • Report type Follow-up report No. 6
  • Start date 01/02/2011
  • Date of first confirmation of the event 16/03/2011
  • Report date 26/08/2011
  • Date submitted to OIE 26/08/2011
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 07/2006
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H5N2
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to the whole country
  • Related reports
    • Immediate notification (11/04/2011)
    • Follow-up report No. 1 (06/05/2011)
    • Follow-up report No. 2 (16/05/2011)
    • Follow-up report No. 3 (10/06/2011)
    • Follow-up report No. 4 (04/07/2011)
    • Follow-up report No. 5 (05/08/2011)
    • Follow-up report No. 6 (26/08/2011)
• New outbreaks
  • Outbreak 1 (AI_WCP2011_36) AI_WCP2011_36, Oudtshoorn, WESTERN CAPE PROVINCE
    • Date of start of the outbreak 14/07/2011
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 115 ? 30 ? 0 ? 0 ? 0
        • Affected Population HI positive for H5
• Summary of outbreaks
  • Total outbreaks: 1
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 26.09% - 0.00% - 0.00% - 0.00%
    • * 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
  • Commercial ostrich farms. Farms tested positive on serology during routine surveillance, but tested negative on PCR and no virus could be found.
  • Diagnosis only confirmed after several follow-up PCR tests.
  • South Africa only reports outbreaks on confirmation on PCR tests.
  • Initially no clinical signs or mortalities were seen.
  • Stamping out in positive farms is taking place.
• Control measures
  • Measures applied
    • Stamping out
    • Quarantine
    • Screening
    • Vaccination prohibited
    • No treatment of affected animals
• Measures to be applied
  • No other measures
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

(?)
-
-------