Kenya. Rift Valley province. Kasambara (20 km from Nakuru). Rhein-Valley hospital is ran by a swiss non-governmental organization (NGO). Medical consultation. The Kikuyu doctor John Wambugu, wearing white plastic gloves, examines a sick Kikuyu man, lying in bed and suffering from malaria. The Kikuyus are Kenya's most populous ethnic group. © 2008 Didier Ruef