A flesh-eating parastic fly is inching back ever-closer to the United States border as funding for surveillance of the worm was withdrawn. The New World screwworm ( Cochliomyia hominivorax ) is a parasitic fly that lays eggs in the open wounds and orifices of live animals, including humans. Once hatched, the maggots eat the animal's flesh, leaving further lesions and wounds, which can kill the host. The New World screwworm had previously been eradicated within the U.S. in 1966, with just