Table 3.

Most frequently reported micro-organisms isolated from blood cultures (Dialysis Event Surveillance, National Healthcare Safety Network, 2014)

PathogenFrequency, N (%)
All BSI, n=32,016ARBSI, n=24,574
Ten most common pathogens
 Staphylococcus aureus9788 (30.6)7817 (31.8)
 Staphylococcus epidermidis4690 (14.6)3837 (15.6)
 Staphylococcus coagulase negative3212 (10.0)2389 (9.7)
 Enterococcus faecalis1535 (4.8)1194 (4.9)
 Escherichia coli1193 (3.7)720 (2.9)
 Enterobacter cloacae891 (2.8)782 (3.2)
 Klebsiella pneumoniae880 (2.7)640 (2.6)
Gram-positive cocci unspecified689 (2.2)509 (2.1)
 Pseudomonas aeruginosa638 (2.0)486 (2.0)
 Serratia marcescens421 (1.3)351 (1.4)
Other pathogens
 Proteus mirabilis354 (1.1)244 (1.0)
 Acinetobacter baumannii289 (0.9)244 (1.0)
 Stenotrophomonas maltophilia288 (0.9)257 (1.0)
 Enterococcus faecium219 (0.7)159 (0.6)
 Candida parapsilosis58 (0.2)52 (0.2)
 Bukholderia cepacia54 (0.2)40 (0.2)
 Ralstonia picketti12 (<0.1)11 (<0.1)
  • BSI, bloodstream infection; ARBSI, access-related bloodstream infection.