Pattern of Human Hydatic Cyst in the Province of Yazd,

Background and Aims: Hydatidosis is a major health problem caused by larva stage of cestodes belonging to the genus Echinococcus granulosus with a cosmopolitan distribution. Zoonoses have a mountain side distribution in Iran. Echinococcus granulosus takes places in two models; sylvatic and domestic. Both life-cycles are present in Iran and human is considered as an afferent host. The prevalence rate of hydatidosis is different, ranging from 1-220 cases in 100000 individuals and mortality rate of hydatidosis up to 2-4%. The aim of the present study was to explore the frequency of human hydatic cyst in Yazd province, Iran from 2006 to2011. Materials and Methods: This is a retrospective study applied through census for five years which investigated all of the profiles concerned with surgeries. Results: A total of 26911 surgeries were performed on individuals for five years; 12 cases (0.045%) were infected with hydatic cyst out of which 9 cases (75%) were affected through liver, 1 case (33.34%) through pulmonary, 1 case (33.33%) through intestine and 1 case (33.33%) through cerebellum. 50 % of the infected individuals were females. Morbidity age was 8-69 years, 7(66.67%) cases who were infected wit