Clonorchis: a) From eating infected sushi that was contaminated from infected snails. (Human Liver Fluke)
b) Generally found in Asian locations, and spreads elsewhere through shipment and purchase of infected fish.
c) Usually diarrhea and upset stomachs. Going untreated can create cancer.
Schistosoma: a) From swimming and playing in freshwater that has been contaminated by infected snails that have ingested contaminated urine and/or feces in the water.
b) Middle East, Asia, South America, Africa
c) Rash or itchy skin. In harsher cases, and repeated infections, liver, intestine, lung, and bladder infections occur. In rare occasions, infection in the brain can cause seizure, paralysis, and spinal cord inflammation.