The New World screwworm case is the first reported U.S. case​ tied to travel to a country with a current outbreak.

The first human screwworm case in the U.S. has been traced to a person in Maryland who traveled from Guatemala.

A rare human case of a flesh-eating parasite known as New World screwworm has been confirmed in a Maryland resident as the Trump administration is trying to prevent the resurgence of an insect largely eradicated from livestock decades ago.