the first report of yersinia isolation of vegetable in iran

yersiniosis is a common infection in human and animals. yersinia enterocolitica infection has been associated with a variety of clinical manifestations. this bacterium has been isolated from water, meat, milk environment, animals and so on. our studies have been accomplished about isolation of y. enterocolitica from vegetables such as lettuce, carrot, celery, parsley, tomato, cabbage, radish, mushroom and leek. four methods for isolating were: enrichment with itc broth, enrichment with psb broth, enrichment with psb medium with koh 0.25% and cold enrichment for 14 d at 4 c and used from psb medium with koh0.25%. two cases of yersinia were isolated from 110 samples of raw vegetables. one case of y. enterocolotica enterocolitica was isolated from lettuce and the other case was y.fredriksenli from parsley. biochemical and virulent tests demonstrated environmental strains but not pathogenic.