A company executive who travels world wide, present with upper abdominal mass and +ve Casoni's test. The organism is: (AIPG 2009)
a. Casoni’s test is a skin test based on type I hypersensitivity reaction. This test is used for diagnosis of Hydatid disease cause by Echinococcus granulosus.
b. A serological test used in diagnosis of hydatid disease is Arc-5 countercurrent immunoelectrophoresis test.