The president also threatened to rethink the federal funding set to aid in replacing the collapsed Francis Scott Key Bridge.

“This is the first human case of travel-associated New World screwworm myiasis (parasitic infestation of fly larvae) from an outbreak-affected country identified in the United States,” HHS spokesperson Emily G. Hilliard told NBC News in a statement.

A human case of a flesh-eating screwworm has been confirmed in Maryland, the first in the United States in years, according to U.S. health officials. The case was confirmed Aug. 4 in a person who had traveled to the United States from El Salvador, said Andrew Nixon, a spokesman for the Department of Health and Human Services.

A case of the flesh-eating screwworm parasite has been identified in a person in Maryland who had traveled to the United States from Guatemala, according to four sources familiar with the situation. The person,