African swine fever,
Information received on 03/10/2019 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 23/08/2019
Date of confirmation of the event 30/09/2019
Report date 02/10/2019
Date submitted to OIE 03/10/2019
Date event resolved 15/01/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 20/04/2017
Manifestation of disease Clinical disease
Causal agent African swine fever virus
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (02/10/2019)
Follow-up report No. 1 (15/10/2019)
Follow-up report No. 2 (24/10/2019)
Follow-up report No. 3 (11/12/2019)
Follow-up report No. 4 (24/01/2020)
New outbreaks (1)
Outbreak 1 Kipkenyo, Kapseret, Kapseret, Uasin Gishu
Date of start of the outbreak 23/08/2019
Outbreak status Resolved (15/01/2020)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 32 15 15 0 17
Affected population The pigs were kept in semi-intensive system of farming and fed on mainly wheat bran and swill from kitchen and hotel.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 32 15 15 0 17
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine 46.88% 46.88% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Introduction of new live animals
  • Swill feeding
  • Fomites (humans, vehicles, feed, etc.)
Epidemiological comments There were many reported cases of mortalities in pigs in the county in the month of september. Some of the cases were reported to the Eldoret regional laboratory and the main pathological presentations were generalized congestion and hemorrhages of visceral organs and serosal surfaces affecting mostly the kidneys, spleen and heart. Most of the farmers in the area keep free ranging pigs.
Control measures
Measures applied
  • Movement control inside the country
  • Quarantine
  • Slaughter
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Disinfection
  • Disinfestation
Diagnostic test results
Laboratory name and type Species Test Test date Result
International Livestock Research Institute (ILRI) (National laboratory) Swine polymerase chain reaction (PCR) 30/09/2019 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations