Give a screwworm an inch, and it’ll take a mile ... If left untreated, the infestation can be fatal after only one week, as the worms dig ever deeper into their dinner. Cochliomyia hominivorax ...

But one athlete ... “When fish consume infected crustaceans, the parasite larvae migrate into the flesh of the fish and into the organs. If larvae have matured and developed into worms, these ...