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

A rare case of travel-related New World screwworm was identified in Maryland in a patient who traveled from El Salvador, a spokesman from the US Department of Health and Human Services said.

First human case of a deadly flesh-eating parasite detected in US. Here's what to know about new world screwworm, what it looks like and symptoms.