A Parasite That Eats Cattle Alive Is Creeping North Toward the US
On November 22, the United States Department of Agriculture temporarily halted the import of cattle from Mexico after a flesh-eating parasite was detected in animals in southern Mexico. Before the discovery of cattle screwworm (Cochliomyia hominivorax) at an inspection point in the state of Chiapas, the species had previously been eliminated in North America since…