 In 2020, an international effort of scientists from 16 countries lead to a detailed consensus on terms to be used or rejected for the genetics, epidemiology , biology, immunology and clinical aspects of echinococcosis.In the human manifestation of the disease, "E. granulosus", "E. multilocularis", "E. oligarthrus" and "E. vogeli" are localized in the liver (in 75% of cases), the lungs (in 5–15% of cases) and other organs in the body such as the spleen, brain, heart, and kidneys (in 10–20% of cases).In people who are infected with "E. granulosus" and therefore have cystic echinococcosis, the disease develops as a slow-growing mass in the body.