Table 1. Pathogens Associated with the First Episode of IAB in 126 Patients under MV.
| Microorganism | Number (%) |
| Gram-positive microorganisms | |
| MRSA | 16 (11.9) |
| Enterococcus spp | 4 (3.0) |
| Streptococcus pneumoniae | 1 (0.7) |
| Coagulase-negative staphylococci | 1 (0.7) |
| Gram-positive bacilli | 1 (0.7) |
| Gram-negative microorganisms | |
| Klebsiella pneumoniae | 29 (21.6) |
| Pseudomonas aeruginosa | 21 (15.7) |
| Elizabethkingia meningoseptica | 18 (13.4) |
| Acinetobacter baumannii | 11 (8.2) |
| Escherichia coli | 11 (8.2) |
| Serratia marcescens | 4 (3.0) |
| Burkoderia cepacia | 4 (3.0) |
| Pseudomonas putita | 2 (1.5) |
| Stenotrophomonas maltophilia | 1 (0.7) |
| Enterobacter species | 3 (2.2) |
| Veillonella | 1 (0.7) |
| Achromobacter xylosoxidans | 1 (0.7) |
| Salmonella enteritis Group D | 1 (0.7) |
| Moraxella lacunata | 1 (0.7) |
| Lactobacillus spp | 1 (0.7) |
| Achromobacter spp | 1 (0.7) |
| GNF-GNB | 1 (0.7) |
| Total | 134 (100) |
Data are reported as mean ±S.D. or number (%). Eight patients developed polymicrobial bacteremia. GNF-GNB, glucose non-fermenting Gram-negative bacilli; IAB, intensive care unit-acquired bacteremia; MV, mechanical ventilation; MRSA, methicillin-resistant Staphylococcus aureus.