Incidence rates for Gram-positive and Gram-negative pathogens by temperature in the month prior to isolation. Data based on 73 German ICUs, January 2001 to December 2012.

Abbreviations: °C, degrees Celsius; No., number; IR, incidence rate defined by No. pathogens per 1000 patient days; CI, confidence interval; GP, Gram-positive pathogens; GN, Gram-negative pathogens; CoNS, coagulase negative Staphylococci. aconsidered 5 Gram-positive pathogens (S. aureus, Coagulase negative staphylococci, E. faecalis and faecium, S. pneumoniae) and/or 8 Gram-negative pathogens (E. coli, P. aeruginosa, K. pneumoniae, E. cloacae, S. maltophilia, S. marcescens, Citrobacter spp., A. baumannii); copy strains were excluded.