Food poisoning is a broad term and may be caused by viruses, bacteria, or parasites. Some people also develop illnesses from food due to allergies and overeating. Norovirus can cause food poisoning, as can salmonella and E. coli. Every year, about 48 million people in the United States experience food poisoning, and it causes around 3000 deaths per year. The average person in the United States will have food poisoning once every three or four years.
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