Biological hazards include microorganisms such as bacteria, viruses, yeasts, molds and parasites. Some of these are pathogens or may produce toxins. A pathogenic microorganism causes disease and can vary in the degree of severity. Examples of biological hazards include Salmonella, E.
Source: https://www.canr.msu.edu/news/biological_chemical_and_physical_hazards_assessed_with_haccp
