Materials and methods:
A total of 800 diarrheal children aged less than 10 years entered this study. Suspected stool samples were cultured on both conventional enteric and cold-enriched media. Conventional enteric media included MacConkey agar, Cefsulodin-Irgasan-Novobiocin (CIN) agar, and Salmonella-Shigella Deoxycholate (2%) agar, while for cold-enriched media PBS (phosphate-buffered saline) (PH=7.2-7.8) was used. Other enteric pathogens including Salmonella, Shigella, and enteropathogenic E. coli were also isolated.