United Press International: A sometimes deadly rodent-borne viral disease has become an epidemic in parts of Europe due to global warming, Belgian researchers said Thursday. The disease nephropathia epidemica was “scarcely known before 1990,” but is now an epidemic in Belgium, France, Germany, Netherlands and Luxembourg, said viral epidemiologist Dr Jan Clement of the University of Leuven’s Rega Institute near Brussels. Thirty-eight percent of known cases occurred between 2005 and 2007, Clement said in …