cryptosporidium spp. infection in human and domestic animals

background: cryptosporidium spp. is a coccidian parasite infected humans and animals. prevalence rate of cryptosporidium spp. infection associated with is some parameters such as sampling, age, season, country and contact to domestic animals. this study aimed to determine cryptosporidium spp. infection in humans and some animals in rural areas of shushtar district from khuzestan province, south- west of iran. methods : in this study, stool specimens were randomly collected from 45 cattle , 8 buffalos, 35 calves, 22 turkeys, 3 sheep, 2 geese as well as 62 humans in different seasons  selected from rural areas of shushtar district located in khuzestan in the south- west of iran  from august 2009 to april 2011. the collected stool samples were examined by modified ziehl-neelsen staining method. results: altogether, 68/115 (59.1%) domestic animals and 9/62 (14.5%) of humans were showed cryptosporidium spp. infection in the study areas. conclusion : in this study we found the high frequency of cryptosporidium spp. infection in the studied areas.