Potent Antagonism of Escherichia Coli, Bacteroides Ovatus, Fusobacterium Varium, and Enterococcus Faecalis, Alone or in Combination, for Enteropathogens in Anaerobic Continuous Flow Cultures

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Abstract
Interactions between representative strains of four predominant resident bacteria of the human colon, Escherichia coli, Enterococcus faecalis, Bacteroides ovatus, and Fusobacterium varium, and strains of seven enteropathogens, Yersinia enterocolitica, Shigella flexneri, Salmonella typhimurium, Vibrio parahaemolyticus, V. cholerae serogroup non O1, Staphylococcus aureus, and Clostridium perfringens, were examined in studies with an anaerobic continuous flow culture system and medium resembling the content of the mouse caecum (MCM). Potent unilateral antagonism attributable to synergic activities of the resident bacteria against the enteropathogens was evident.