Around 1.6 million people are living with HIV in Kenya according to the UN.
Obadiah Karuru, who lives with HIV in Eldoret, is offering more than just a lift in his matatu (taxi).
On his journeys through town he advises his passengers to get tested and also provides detailed information about different strains of the disease, prevention and treatment.
Deborah Basckin reports.
Video produced by BBC Africa’s Peter Njoroge.