A rare and potentially concerning development has emerged from the ongoing hantavirus outbreak aboard an Atlantic cruise ship, where at least three people have died and several others have fallen ill.

(CNN) — 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.

For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about evolution itself.

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 ...