Disease-causing microorganisms found in food, usually bacteria, fungi, parasites, protozoans, and viruses. The top ten pathogens are: Salmonella; Staphylococcus Aureus; Campylobacter jejuni; Yersinia enerocolitica; Listeria monocytogenes; Vibrio cholerae non-01; Vibrio Parahemolyticus; Bacillus cereus; Escherichia coli - enteropathogenic; and Shigella. Many of these pathogens may be found in contaminated meat, poultry, shell eggs, dairy products, and seafood.