Gnathostoma

Gnathostoma - a genus of parasitic nematodes in the family gnathostomatidae. The gnathostoma lifecycle involves copepods as the first intermediate host; fish, frogs, or snakes as the second intermediate host; and pigs, cats, dogs, or wild animals as its natural definitive host. Humans may become infested by eating infested fish or fowl. Infestation causes gnathostomiasis.

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