It is well known that raw vegetable was considered as an agent for transmission of intestinal parasite and
fresh vegetables have an important role in human nutrition. Therefore, the present study was designed to
detect the parasite contamination in many common raw vegetables in Khorramabad, Iran. A total of 550
fresh vegetable samples which belonged to spring (275) and winter (275) were randomly collected. All
samples were examined according to standard methods for detection of protozoan cyst, oocysts, helminth
eggs as well as larva. The findings indicated 52.7% positive for intestinal parasites and the highest
contaminated sample was leek 80% in spring and 43.6% in winter. However, the least contaminated
samples were green onion (34.5%) in spring and garden cress (10.9%) in winter. Chi-square test indicated
the significant difference between contamination in spring when compared to winter (p < 0.002). Our
data demonstrated importance of raw vegetables in transmission of some intestinal parasites and
highlight the role of raw vegetables in threatening public health.