Highly pathogenic avian influenza, South Africa (WAHID Interface - OIE World Animal Health Information Database, April 12 2011, edited)
[Source: OIE, full page: <cite cite="http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10477 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Extract, edited.]
Highly pathogenic avian influenza, South Africa
Information received on 12/04/2011 from Dr Bothle Michael Modisane, Chief Director Partnerships, Department of Agriculture, Forestry and Fisheries, Food Safety and Biosecurity, PRETORIA, South Africa
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[Source: OIE, full page: <cite cite="http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=10477 ">WAHID Interface - OIE World Animal Health Information Database</cite>. Extract, edited.]
Highly pathogenic avian influenza, South Africa
Information received on 12/04/2011 from Dr Bothle Michael Modisane, Chief Director Partnerships, Department of Agriculture, Forestry and Fisheries, Food Safety and Biosecurity, PRETORIA, South Africa
- Summary
- Report type Immediate notification
- Start date 01/02/2011
- Date of first confirmation of the event 16/03/2011
- Report date 11/04/2011
- Date submitted to OIE 12/04/2011
- 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
- New outbreaks
- Outbreak 1 - (AI_WCP2011_01) AI_WCP2011_01, Oudtshoorn, WESTERN CAPE PROVINCE
- Date of start of the outbreak 01/02/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 207 - ... - 0 - 0 - 0
- Affected Population Commercial ostrich farm.
- Outbreak picked up during routine surveillance.
- No clinical signs seen.
- Outbreak 2 - (AI_WCP2011_02) AI_WCP2011_02, Uniondale, WESTERN CAPE PROVINCE
- Date of start of the outbreak 01/03/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 6523 - 0 - 0 - 0
- Affected Population Commercial ostrich farm.
- Outbreak picked up during routine surveillance.
- No clinical signs seen.
- Outbreak 3 - (AI_WCP2011_03) AI_WCP2011_03, Oudtshoorn, WESTERN CAPE PROVINCE
- Date of start of the outbreak 20/02/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 5754 - 100 - 100 - 0 - 0
- Affected Population Commercial ostrich farm.
- Outbreak picked up during routine surveillance.
- Mortalities and clinical signs started afterwards.
- PCR positive for H5N2.
- Outbreak 4 - (AI_WCP2011_04) AI_WCP2011_04, Oudtshoorn, WESTERN CAPE PROVINCE
- Date of start of the outbreak 01/03/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 1610 - ... - 0 - 0 - 0
- Affected Population Commercial ostrich farm.
- Outbreak picked up during routine surveillance.
- No clinical signs seen.
- Outbreak 5 - (AI_WCP2011_05) AI_WCP2011_05, Uniondale, WESTERN CAPE PROVINCE
- Date of start of the outbreak 01/03/2011
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 819 - ... - 0 - 0 - 0
- Affected Population Commercial ostrich farm.
- Outbreak picked up during routine surveillance.
- No clinical signs seen.
- Outbreak 1 - (AI_WCP2011_01) AI_WCP2011_01, Oudtshoorn, WESTERN CAPE PROVINCE
- Summary of outbreaks
- Total outbreaks: 5
- Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 14913 - 100** - 100 - 0 - 0
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - ** - 0.67% - ** - 0.67%
- * 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
- Source of the outbreak(s) or origin of infection
- 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.
- Control measures
- Measures applied
- Quarantine
- Screening
- Vaccination prohibited
- No treatment of affected animals
- Measures to be applied
- Stamping out
- Measures applied
- 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 - haemagglutination inhibition test (HIT) - 16/03/2011 - Positive
- Birds - real-time PCR - 09/04/2011 - Positive
- Birds - real-time PCR - 12/04/2011 - Positive
- Tests and results: Species - Test - Test date - Result
- Laboratory name and type Agricultural Research Council - Onderstepoort Veterinary Institute (ARC ? OVI) (National laboratory)
- Future Reporting
- The event is continuing. Weekly follow-up reports will be submitted.
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