TABLE 2.
Characteristics of the Isolates and Types of Bloodstream Infection
| Microorganisms | Isolates (n = 117) | Bloodstream Infection Episodes (n = 93) | Monomicrobial, n = 71 (76.3%) | Polymicrobial, n = 22 (23.7%) | Recurrent, n = 19 (20.4%) |
|---|---|---|---|---|---|
| Gram-positive, n (%) | 85 (72.6) | 74 (79.6) | 52 (73.2) | 22 (100) | 14 (73.7) |
| Enterococcus speciesb | 53 (45.3) | 53 (55.8) | 32 (45.1) | 22 (100) | 11 (57.9) |
| Vancomycin-resistant Enterococcus faecium | 5 (4.3) | 5 (5.4) | 3 (4.2) | 2 (9.1) | 1 (5.3) |
| Staphylococcus aureus | 7 (6) | 7 (7.5) | 3 (4.2) | 4 (18.2) | 2 (10.5) |
| Methicillin-resistant S. aureus | 5 (4.3) | 5 (5.4) | 2 (2.8) | 3 (13.6) | 1 (5.3) |
| Coagulase-negative Staphylococci | 24 (20.5) | 24 (25.8) | 16 (22.5) | 8 (36.4) | 5 (26.3) |
| Gemella sanguinis | 1 (0.8) | 1 (0.8) | 1 (0.8) | 0 (0.0) | 0 (0.0) |
| Gram-negative, n (%) | 29 (24.8) | 27 (29.0) | 16 (22.5) | 12 (54.5) | 10 (52.6) |
| Enterobacteralesa | 19 (16.2) | 19 (20.4) | 10 (14.1) | 9 (40.9) | 5 (26.3) |
| Extended spectrum beta lactamase-positive Enterobacterales | 6 (5.1) | 6 (6.5) | 3 (4.2) | 3 (13.6) | 2 (10.5) |
| Carbapenemase-producing Enterobacterales | 10 (8.5) | 10 (10.8) | 6 (8.5) | 4 (18.2) | 2 (10.5) |
| Enterobacter species | 6 (5.1) | 6 (6.5) | 4 (5.6) | 2 (9.1) | 3 (15.8) |
| Cephalosporin-resistant Enterobacter | 4 (3.4) | 4 (4.3) | 3 (4.2) | 1 (4.5) | 1 (3.6) |
| Pseudomonas aeruginosa | 2 (1.7) | 2 (2.2) | 1 (1.4) | 1 (4.5) | 1 (5.3) |
| MDR P. aeruginosa | 1 (0.8) | 1 (1.1) | 1 (1.4) | 0 (0.0) | 1 (5.3) |
| Stenotrophomonas maltophilia | 1 (0.8) | 1 (1.1) | 1 (1.4) | 0 (0.0) | 1 (5.3) |
| MDR S. maltophilia | 1 (0.8) | 1 (1.1) | 1 (1.4) | 0 (0.0) | 1 (5.3) |
| Acinetobacter baumannii | 1 (0.8) | 1 (1.1) | 0 (0.0) | 1 (4.5) | 0 (0.0) |
| Yeasts, n (%) | 3 (2.6) | 3 (3.2) | 3 (4.2) | 0 (0.0) | 0 (0.0) |
| Candida albicans | 3 (2.6) | 3 (3.2) | 4 (4.2) | 0 (0.0) | 0 (0.0) |
MDR = multidrug resistant.
aEnterobacterales: Klebsiella pneumoniae (16 [85%]), Klebsiella oxytoca (1 [5%]), Serratia marcescens (1 [5%]), and Escherichia coli (1 [5%]).
bEnterococcus species: Enterococcus faecium (26 [49.1%]), Enterococcus faecalis (26 [49.1%]), and Enterococcus hirae (1 [1.8%]).