The antimicrobial activity of probiotic bacteria isolated from different natural sources against hemorrhagic O157:H7.

Background: Diarrheal diseases have been seen in all geographical areas throughout the world. Therefore, considering treatment, could be deemed a necessary action.

Objective: The aim of this study was to determine the antimicrobial effect of probiotic bacterial strains isolated from different natural sources against 2 pathotypes of pathogenic

Methods: This cross-sectional study of Martyr Chamran University of Ahvaz was carried out from December 2013 to July 2014.