Cymothoa infection destroys fish 's tongue . Zombie infection turns victim into zombie . Guinea Pig can only be removed inch - by - inch . Filarial infections are second - leading cause of permanent infection .
Cymothoa exigua destroys fish 's tongue . Sacculina carcini turns victim into zombie . Guinea Worms can only be removed inch-by-inch . Filarial Worms are second-leading cause of permanent disability .