Flesh-eating screwworm returns to U.S. after 60 years, threatening cattle herd​Flesh-eating screwworm returns to U.S. after 60 years, threatening cattle herd 

 A flesh-eating parasite that had been kept out of U.S. livestock for decades has been detected in Texas, threatening the nation’s cattle industry and food supply at a time when prices are already high.  ​​A flesh-eating parasite that had been kept out of U.S. livestock for decades has been detected in Texas, threatening the nation’s cattle industry and food supply at a time when prices are already high.