A traveller asks about the risk of schistosomiasis after freshwater swimming in Lake Malawi. At what stage of the Schistosoma lifecycle does infection...

Question

A traveller asks about the risk of schistosomiasis after freshwater swimming in Lake Malawi. At what stage of the Schistosoma lifecycle does infection occur when cercariae penetrate the skin?

Accepted Answer

Cercaria stage - the free-swimming larval form released from the snail intermediate host

Answer

Egg stage

Answer

Miracidium stage

Answer

Adult worm stage

Answer

Metacercaria stage

uk-dtmh MCQ (SBA): Schistosoma Infection Stage

A traveller asks about the risk of schistosomiasis after freshwater swimming in Lake Malawi. At what stage of the Schistosoma lifecycle does infection occur when cercariae penetrate the skin?