Epizootic ulcerative syndrome,
South Africa
Information received on 03/05/2016 from Dr Bothle Michael Modisane, Chief Director , Department of Agriculture, Forestry and Fisheries, Animal Production and Health, PRETORIA, South Africa
Report type Immediate notification
Date of start of the event 08/04/2016
Date of confirmation of the event 12/04/2016
Report date 03/05/2016
Date submitted to OIE 03/05/2016
Date event resolved 01/08/2016
Reason for notification Recurrence of a listed disease
Date of previous occurrence 10/2015
Manifestation of disease Clinical disease
Causal agent Aphanomyces invadans
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (03/05/2016)
Follow-up report No. 1 (25/11/2016)
New outbreaks (1)
Outbreak 1 (EUS_WCP_2016_001) EUS_WCP_2016_001, Cederberg, Western Cape Province
Date of start of the outbreak 08/04/2016
Outbreak status Resolved (01/08/2016)
Epidemiological unit River system
Water type Fresh water
Population type Wild
Production system Open
Affected animals
Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered
Smallmouth bass (Micropterus dolomieu) 1 (scale 0 to 5) 1 (scale 0 to 5) 1 0 1 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Smallmouth bass (Micropterus dolomieu) 1 0 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Smallmouth bass (Micropterus dolomieu) ** ** 0.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Department of Agriculture, Forestry and Fisheries (DAFF) Aquaculture Research Centre (National laboratory) Smallmouth bass (Micropterus dolomieu) polymerase chain reaction (PCR) 12/04/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations