Medical Definition of food poisoning
1: either of two acute gastrointestinal disorders caused by bacteria or their toxic products:a: a rapidly developing intoxication marked by nausea, vomiting, prostration, and often severe diarrhea and caused by the presence in food of toxic products produced by bacteria (as some staphylococci)b: a less rapidly developing infection especially with salmonellae that has generally similar symptoms and that results from multiplication of bacteria ingested with contaminated food
2: a gastrointestinal disturbance occurring after consumption of food that is contaminated with chemical residues (as from sprays) or food (as some fungi) that is inherently unsuitable for human consumption
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