Flesh-Eating Screwworm Reaches U.S. Livestock

The flesh-eating New World screwworm has been confirmed in a Texas calf, marking the first detection of the parasite in U.S. livestock in decades. The Department of Agriculture announced Wednesday that a three-week-old calf in Zavala County, Texas, tested positive for New World screwworm, a parasite whose larvae feed on the living tissues of warm-blooded ...