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How many hosts are there in the life cycle of the parasites that cause swimmers itch?

April 26, 2017cause CYCLE hosts itch life parasites swimmer

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How many hosts are there in the life cycle of the parasites that cause swimmers itch?

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There are always two, a snail intermediate and vertebrate final host, usually a bird. The parasite must be transmitted from snail to bird and from bird to snail. It can never go from snail to snail or from bird to bird.