Table 2: Monomicrobial and polymicrobial BSIs.

PathogensMonomicrobial BSI (%)Polymicrobial BSI (%)aTotal (%)

Gram-positive bacteria60 (72.3)53 (51.5)113 (60.8)
a-hemolytic streptococci (viridans)12
Streptococcus pneumoniae1
Coagulase-negative staphylococci4221
Staphylococcus aureus34
Methicillin-resistant Staphylococcus aureus 31
Enterococcus sp.721
Bacillus sp.43
Gram-negative bacteria15 (18.1)44 (42.7)59 (31.7)
Enterobacter Klebsiella Serratia group920
Escherichia coli13
Pseudomonas sp.18
Stenotrophomonas maltophilia13
Actinobacter sp.35
Other Gram negatives5
Yeast8 (9.6)6 (5.8)14 (7.5)
Candida albicans1
Candida nonalbicans 76

Total83 (100)103 (100)186 (100)

aTotal of 103 pathogens in 42 polymicrobial BSIs (33.6% of 125 BSIs).