Man - snail - crab man cycle is seen in
ParasiteFirst intermediate hostSecond intermediate hostParagonimus westermaniFresh water snail Crab/ Cray fishDiphyllobothrium latumCopepods (Cyclops)Fresh water fish Clonorchis sinensisSnail Fresh water fish Fasciola hepaticaSnail Aquatic vegetation Fasciolopsis buskiSnail Aquatic vegetation (Ref: K.D Chatterjee 13th edition, p196-198)
Paragonimus westermanii
Fasciola hepatica
Schistosoma mansoni
Echinococcus granulosus
parasitology