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Yellow fever outbreak in Kenya (Isiolo and Garissa Counties) - update 2

11 August 2022

According to the Kenyan Ministry of Health, cases of yellow fever continue to be reported in Kenya. This year, up to the 23 July 2022, there have been 111 cases including 12 deaths from yellow fever.  The majority of cases (71) have been reported from Isiolo County (to the North of Nairobi). 

The Kenyan Government have begun a yellow fever vaccination campaign in Isiolo County and neighbouring  Garissa County (on the East side of Kenya in the North Eastern Province) in an attempt to prevent further cases of yellow fever.

Yellow fever is endemic in Kenya, although large outbreaks are uncommon.

Yellow fever is an acute viral haemorrhagic disease which is transmitted by the day-biting Aedes mosquito. It is found in tropical areas of Africa and Central and South America.

Advice to travellers

All travellers should be advised to practice mosquito bite avoidance at all times.

A traveller's risk of yellow fever is determined by their individual risk assessment. Factors that will influence their risk includes:

  • country or countries to be visited
  • length of stay
  • rate of transmission at destination, including current outbreaks
  • immunisation status
  • planned activities

Unvaccinated travellers who visit yellow fever endemic areas are at risk of becoming infected.

  • Yellow fever vaccine should be considered (unless contraindicated) for travellers at risk.

For travellers to Garissa County (part of North Eastern Province which is outside the recognised yellow fever transmission area), yellow fever vaccine may need to be considered depending on the traveller's risk assessment. For support with clinical enquiries, call the TRAVAX helpline.

Please refer to the TRAVAX Kenya country page and Yellow fever disease page for further information.