Rift Valley fever,
South Sudan
Information received on 08/03/2018 from Dr Jacob Maiju Korok, Acting Director General, Veterinary Services, Ministry of Agriculture, Forestry, Tourism, Animal Resources, Fisheries, Cooperatives, JUBA, South Sudan
Summary
Report type Immediate notification
Date of start of the event 11/12/2017
Date of confirmation of the event 02/03/2018
Report date 08/03/2018
Date submitted to OIE 08/03/2018
Date event resolved 03/04/2018
Reason for notification First occurrence of a listed disease in the country
Causal agent Phlebovirus (Bunyaviridae)
Nature of diagnosis Clinical, Laboratory (basic)
This event pertains to a defined zone within the country
Related reports Immediate notification (08/03/2018)
Follow-up report No. 1 (19/03/2018)
Follow-up report No. 2 (24/03/2018)
Follow-up report No. 3 (31/03/2018)
New outbreaks (1)
Outbreak 1 Wunthou, Lakes
Date of start of the outbreak 11/12/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 2000 8 0 0 0
Sheep / goats 0 0 0 0
Affected population There were a few cases of abortion in cattle herds observed after heavy flooding in November 2017, when swampy areas formed and the number of mosquitoes increased. No mortalities in cattle have been reported. During the investigation clinical signs, consistent with Rift Valley fever, were observed.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 2000 8 0 0 0
Sheep / goats 0 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cattle 0.40% 0.00% 0.00% 0.00%
Sheep / goats ** ** - **
*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
  • Contact with infected animal(s) at grazing/watering
  • Vectors
Control measures
Measures applied
  • Surveillance within containment and/or protection zone
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Movement control inside the country
  • Quarantine
  • Control of vectors
  • Vector surveillance
Diagnostic test results
Laboratory name and type Species Test Test date Result
Onderstepoort Veterinary Institute, South Africa (OIE Reference Laboratory) Cattle enzyme-linked immunosorbent assay (ELISA) 02/03/2018 Positive
Onderstepoort Veterinary Institute, South Africa (OIE Reference Laboratory) Sheep / goats enzyme-linked immunosorbent assay (ELISA) 02/03/2018 Negative
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations