Incidence of aflatoxin in peanuts (Arachis hypogaea Linnaeus) from markets in Western, Nyanza and Nairobi Provinces of Kenya and related market traits

► Majority of peanut storage facilities were poorly ventilated and dusty. ► 37% of peanut samples in Kenya exceeded the national aflatoxin regulatory limit. ► Peanut butter and spoilt peanuts had the highest aflatoxin contamination levels. ► The type of peanut market outlet significantly influences aflatoxin contamination. ► Storage of peanuts in plastic material promotes aflatoxin contamination.