Brucellosis (Brucella abortus),
Information received on 23/10/2018 from Dr Letlhogile Modisa, Director, Veterinary Services, Ministry of Agriculture, Gaborone, Botswana
Report type Immediate notification (Final report)
Date of start of the event 07/08/2018
Date of confirmation of the event 27/08/2018
Report date 23/10/2018
Date submitted to OIE 23/10/2018
Date event resolved 23/10/2018
Reason for notification Recurrence of a listed disease
Date of previous occurrence 06/2017
Manifestation of disease Clinical disease
Causal agent Brucella abortus
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 Parakarungu, Chobe West, CHOBE, Chobe
Date of start of the outbreak 07/08/2018
Outbreak status Resolved (23/10/2018)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 50 6 0 0 0
Affected population Cattle grazing in a communal set in a village
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 50 6 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cattle 12.00% 0.00% 0.00% 0.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Heifers were reported to be aborting in different kraals in the same extension area. Samples were collected for testing and all the 6 animals returned positive results. Animals aborted in the space of one(1) week. Surveillance has not detected any more cases of abortion since the six cases in August 2018. Vaccination for brucellosis is not practised in the country.
Control measures
Measures applied
  • Traceability
  • Surveillance within containment and/or protection zone
  • Surveillance outside containment and/or protection zone
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Botswana National Veterinary Laboratory (National laboratory) Cattle complement fixation test (CFT) 27/08/2018 Positive
Future Reporting
The event is resolved. No more reports will be submitted.
Map of outbreak locations