It is used for Detection of antibodies to Echinococcus species, including Echinococcus multilocularis and Echinococcus granulosus. In humans, E granulosus (cystic echinococcal disease) cysts typically develop in the lungs and liver, and the infection may remain silent or latent for years (5-20 years) prior to cyst enlargement and symptom manifestation. Diagnosis of echinococcal infections relies on characteristic finding by ultrasound or other imaging techniques and serologic findings.