Table 2

Distribution of leading pathogens in patients with ventilator-associated pneumonia

Details regarding episodes of infection
Total (%)a

Number of episodes microbiologically documented
177
Number of microorganisms identified
271
Gram-negative microorganisms
140 (52)
     Pseudomonas aeruginosa
25 (9)
     Enterobacter spp.
20 (7)
     Escherichia coli
17 (6)
     Klebsiella pneumoniae
15 (6)
     Proteus mirabilis
7 (3)
     Haemophilus influenzae
6 (2)
     Non-aeruginosa Pseudomonas spp.
6 (2)
     Serratia marcescens
5 (2)
     Other Gram-negative micro-organismsb
39 (14)
Gram-positive microorganisms
75 (28)
     Staphylococcus aureus
55 (20)
     Coagulase-negative staphylococci
10 (4)
     Enterococus faecalis
3 (1)
     Streptococcus pneumoniae
2 (1)
     Other streptococci
2 (1)
     Other Gram-positive micro-organisms
3 (1)
Other micro-organisms
56 (21)
Candida albicans
34 (13)
Non-albicans Candida spp.
6 (2)
Other micro-organismsc
16 (6)

aThe percentage given is that of the total number of micro-organisms (n = 271). bOther Gram-negative microorgamisms included other enterobacteriaceae, Acinetobacter spp., Citrobacter spp., other Klebsiella spp. and Morganella morgani. cOther micro-organisms include fungi and viruses.

Hugonnet et al. Critical Care 2007 11:R80   doi:10.1186/cc5974