عنوان مقاله [English]
نویسندگان [English]چکیده [English]
This study was carried out to investigate the association between infection to Giardia sp. and occurrence of diarrhea in Urmia , Iran. Fecal samples were collected from 246 calves ( 34 diarrheic and 212 non-diarrheic ) and examined for the presence of Giardia spp. cysts using a quantitative centrifugation concentration zinc sulfate flotation technique. Analysis of data showed that the relative frequency of infection to Giardia cysts is significantly ( p<0.001 ) more in diarrheic calves (35.3%) than in non-diarrheic ones ( 8% ) . Epidemiologic measures of association, i.e., odds ratio, population odds ratio, attributable risk , attributable fraction , population attributable rate, population attributable fraction were 6.26, 1.42 , 31.2, 3.7 , and 0.27, respectively. The results would suggest that there is a significant association between infection Giardia spp. and occurrence of diarrhea in Urmia district . However, more studies are required to establish a cause-effect relationship .