Division Diagnostic Criteria

At least one of the following five:

• Histopathology or parasitology compatible with Echinococcus multilocularis or granulosus (for example, direct visualization of the protoscolex in cyst fluid)

• Detection of Echinoccocus granulosus pathognomonic macroscopic morphology of cyst(s) in surgical specimens

• Typical organ lesions detected by imaging techniques (for example, computerized tomography, sonography, MRI) AND confirmed by a serological test

• Echinococcus spp. specific serum antibodies by high-sensitivity serological test AND confirmed by a high specificity serological test

• Detection of Echinococcus multilocularis or granulosus nucleic acid in a clinical specimen