Digital Journal: An epidemic of the viral disease nephropathia epidemica (NE) has been linked to increases in the vole population. The outbreaks of this disease have been connecetd to the effects of global warming. Buy an ad on DigitalJournal.com An epidemic of the viral disease nephropathia epidemica (NE) has been linked to increases in the vole population caused by hotter summers, milder winters and increased seedcrop production by broadleaf trees. New research links outbreaks of this rodent-borne disease …