MT-ND1 and cholesteryl ester measurement: Molecular analysis of sera and cyst tissue of patients with CE confirmed by surgery and histology detected E. granulosus DNA in 15.0% (95% CI: 8.8–24.4) and 10.0% (95% CI: 5.2–18.5) of serum samples based on the cox1 and nad1 gene, respectively.