Fig. 3From: Prevalence of Klebsiella pneumoniae strains producing carbapenemases and increase of resistance to colistin in an Italian teaching hospital from January 2012 To December 2014Number of colistin resistant strains and colistin susceptible strains identified in 2012, 2013 and 2014. CoR: colistin resistant. CoS: colistin susceptibleBack to article page