The U.S. has confirmed its first human case of the New World screwworm, a flesh-eating parasite whose northward creep from South America has put the country's cattle industry on high alert in recent ...

A sample of screwworms are displayed at a veterinary clinic in Tapachula, Chiapas state, Mexico on July 4. The U.S. Department of Health and Human Services on Sunday reported the first human case in ...

Before cities, borders, or names—humans crossed into a vast and untouched continent. From tundra to jungle, their journey ...

A Maryland resident has been diagnosed with a rare parasitic infection known as New World screwworm (NWS), marking the first human case in the United States in years. The Centers for Disease Control ...

Maddy has a degree in biochemistry from the University of York and specializes in reporting on health, medicine, and genetics. Maddy has a degree in biochemistry from the University of York and ...

Just two months after reports warily noted that new world screwworms, flesh-eating parasites that are notorious for killing livestock, pets and other animals, hadn’t “made it back into the U.S. yet,” ...