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Bacillus cereus is an aerobic spore-forming bacterium that is commonly found in soil, on vegetables, and in many raw and processed foods. B. cereus food poisoning may occur when foods are prepared and held without adequate refrigeration for several hours before serving, with B. cereus 6 cells/g.
symptoms is within 6 to 24 h after consumption of the incriminated food. B. cereus food poisoning is underestimated probably because of the short duration of the illness (~24 h). History In 1887, Bacillus cereus isolated from air in a cowshed by Frankland and Frankland. Since 1950, many outbreaks from a variety of foods including meat and vegetable soups, cooked. meat and poultry, fish, milk and ice cream were described in Europe.