A human case of the flesh-eating New World Screwworm has been found in the United States in a person who traveled to El Salvador. The parasitic insect is actually a fly that looks similar to a ...

The parasite — the larva of the new world screwworm fly — can devastate cattle herds and is rife in parts of Central America.

A human case of the flesh-eating New World Screwworm has been found in the United States, carried by a person who recently visited El Salvador. The patient had recently returned to Maryland from ...