Livestock such as sheep, cattle, goats, and camels acts as intermediate hosts, which harbor metacestodes in the liver, lung, and other internal organs. Echinococcosis is one of the most important tropical diseases worldwide distribution due to its remarkable economic damages. The species complex of Echinococcus granulosus sensu lato ( s.l.) is a parasite causing cystic echinococcosis (CE). Hence, reporting G5 in livestock in this area should be considered due to transmission to humans. It is the first molecular identification of cystic echinococcosis in Central Iran. This study showed that G1-G3 and G6/G7 genotypes were presented in all animals, but G5 was reported only in cattle, goats, and camels. One sample was detected as Taenia hydatigena. The G6/G7 was observed in 19 isolates and G5 was reported in nine samples. Out of 164 samples, the G1-G3 complex genotype had the most frequency in samples, with 135 cases recognized. Statistical analyses were done using SPSS version 16.0 by chi-square with a significant difference of less than 0.05. Then, phylogenetic analysis was performed using MEGAX. Out of 657 samples, 164 samples were genotyped. The demographic data was collected as well as cyst location, fertility, and viability. Six hundred fifty-seven hydatid cysts were isolated from 97 animals, including sheep, cattle, camels, and goats slaughtered in Yazd abattoir from September 2018 to January 2020. Therefore, in this study, we analyzed the hydatid cysts in livestock slaughtered in an abattoir in this region. There is no genotype information from hydatid cysts in the intermediate hosts in Central Iran. The species complex of Echinococcus granulosus sensu lato ( s.l.) causes cystic echinococcosis distributed worldwide.

Dr. mohammad javad ahmadian