Rift Valley fever,
Information received on 08/06/2018 from Dr Obadiah Nyaga Njagi, Director of Veterinary Services, Directorate of Veterinary Services, State Department of Livestock, Ministry of Agriculture, Livestock and Fisheries, NAIROBI, Kenya
Report type Immediate notification
Date of start of the event 03/06/2018
Date of confirmation of the event 06/06/2018
Report date 08/06/2018
Date submitted to OIE 08/06/2018
Date event resolved 30/07/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 18/11/2007
Manifestation of disease Clinical disease
Causal agent Rift valley fever virus
Nature of diagnosis Suspicion
This event pertains to a defined zone within the country
Related reports Immediate notification (08/06/2018)
Follow-up report No. 1 (15/06/2018)
Follow-up report No. 2 (22/06/2018)
Follow-up report No. 3 (02/07/2018)
Follow-up report No. 4 (16/07/2018)
Follow-up report No. 5 (06/08/2018)
Follow-up report No. 6 (15/08/2018)
Follow-up report No. 7 (28/08/2018)
Follow-up report No. 8 (21/09/2018)
Follow-up report No. 9 (08/11/2018)
New outbreaks (1)
Outbreak 1 Basir, Wajir
Date of start of the outbreak 03/06/2018
Outbreak status Resolved (30/07/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Camelidae 250 25 17 0 0
Affected population The suspected cases were reported in a pastoral area which was experiencing floods due to heavy rainfall.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Camelidae 250 25 17 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Camelidae 10.00% 6.80% 68.00% 6.80%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Vectors
Epidemiological comments The area has experienced rainfall above normal and increased mosquito population. Human cases have been reported in the region. The Ministry of Health and the Ministry of Livestock have started a joint investigation. Further news will be reported in follow-up reports.
Control measures
Measures applied
  • Ante and post-mortem inspections
  • Vector surveillance
  • Quarantine
  • Surveillance within containment and/or protection zone
  • Movement control inside the country
  • 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
Central veterinary investigation laboratory (National laboratory) Camelidae enzyme-linked immunosorbent assay (ELISA) 06/06/2018 Inconclusive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations