Two more cases of the New World screwworm have been confirmed in Texas, demonstrating the difficulty of stopping the spread of a pest that potentially could devastate the nation’s cattle industry

The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century, with an infestation from its flesh-eating larvae…

US farmers and officials are worried about the arrival of screwworm in Texas after a calf was found with the flesh-eating parasite.