Escherichia coli is a Gram-negative, coliform bacteria that is one of the most common species found in human digestive systems. Certain types of E. coli bacteria that are known to cause severe food poisoning upon consumption of contaminated food. One of these, Shiga toxin-producing E. coli (STEC), produce a potent toxin called Shiga toxin (Stx). The most common STEC serotype, O157:H7, causes more than 75% of E. coli infections worldwide.
Control of Listeria species, including Listeria monocytogenes (L. mono) is vital in any food processing environment. While L. mono is not a leading cause of foodborne illness, it is however, among the leading causes of death from foodborne illness.