Table 3.
Frequency of bacteria isolated from targeted specimens
| Bacteria | Overall, n (%) | Blood, n (%) | Body fluid, n (%) | Catheter, n (%) | Pus, n (%) | Urine, n (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 2021 | 2022 | 2020 | 2021 | 2022 | 2020 | 2021 | 2022 | 2020 | 2021 | 2022 | 2020 | 2021 | 2022 | ||
| Gram-negative isolates | ||||||||||||||||
| Acinetobacter baumannii | 1 (0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.85) | 0 (0.0) | 0 (0.0) |
| Citrobacter freundii | 18 (2.4) | 2 (2.9) | 1 (1.7) | 2 (2.6) | 0 (0.0) | 1 (16.7) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (4.5) | 0 (0.0) | 4 (6.9) | 0 (0.0) | 1 (0.85) | 4 (2.5) | 1 (1.2) |
| Citrobacter koseri | 1 (0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (20.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Enterobacter cloacae | 28 (3.6) | 6 (8.8) | 2 (3.4) | 2 (2.6) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 3 (6.8) | 0 (0.0) | 5 (8.6) | 8 (14) | 0 (0.0) | 5 (3.1) | 3 (3.7) |
| E. coli | 241 (30.5) | 5 (7.4) | 1 (1.7) | 10 (12.8) | 4 (40.0) | 1 (16.7) | 2 (40.0) | 4 (26.7) | 4 (40.0) | 16 (36.4) | 2 (8.3) | 8 (13.8) | 8 (14) | 63 (53.8) | 77 (48.1) | 32 (39.5) |
| Klebsiella aerogenes | 9 (1.1) | 0 (0.0) | 1 (1.7) | 3 (3.8) | 1 (10.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.9) | 0 (0.0) | 3 (3.7) |
| Klebsiella oxytoca | 15 (1.9) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 5 (8.6) | 2 (3.5) | 1 (0.9) | 4 (2.5) | 3 (3.7) |
| K. pneumoniae subsp. pneumoniae | 191 (24.2) | 11 (16.2) | 8 (13.6) | 14 (17.9) | 2 (20.0) | 2 (33.2) | 1 (20.0) | 2 (13.3) | 4 (40.0) | 10 (22.7) | 4 (16.7) | 17 (29.3) | 13 (22.8) | 24 (20.5) | 53 (33.1) | 26 (32.1) |
| Morganella morganii | 2 (0.2) | 0 (0.0) | 1 (1.7) | 1 (1.3) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| P. mirabilis | 8 (1.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 3 (5.2) | 2 (3.5) | 0 (0.0) | 1 (0.6) | 2 (2.5) |
| P. aeruginosa | 50 (6.4) | 1 (1.5) | 7 (11.9) | 4 (5.1) | 0 (0.0) | 1 (16.7) | 0 (0.0) | 1 (6.7) | 0 (0.0) | 3 (6.8) | 10 (41.7) | 7 (12.1) | 7 (12.3) | 2 (1.7) | 2 (1.3) | 5 (6.2) |
| Salmonella spp. | 8 (1.0) | 5 (7.4) | 2 (3.4) | 1 (1.3) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Serratia liquefaciens | 1 (0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (20.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Serratia marcescens | 32 (4.0) | 2 (2.9) | 3 (5.1) | 2 (2.6) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (6.7) | 1 (10.0) | 3 (6.8) | 0 (0.0) | 1 (1.7) | 6 (10.6) | 6 (5.1) | 5 (3.1) | 2 (2.5) |
| Gram-positive isolates | ||||||||||||||||
| Enterococcus spp. | 1 (0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (1.8) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| S. aureus subsp. aureus | 157 (19.9) | 27 (39.7) | 28 (47.5) | 34 (43.6) | 3 (30.0) | 1 (16.7) | 0 (0.0) | 7 (46.6) | 1 (10.0) | 6 (13.6) | 6 (25) | 8 (13.8) | 10 (17.5) | 18 (15.4) | 4 (2.5) | 4 (4.9) |
| CoNS | 21 (2.7) | 8 (11.8) | 4 (6.8) | 4 (5.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 5 (3.2) | 0 (0.0) |
| Streptococcus spp. | 6 (0.7) | 1 (1.4) | 1 (1.5) | 1 (1.3) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (2.4) | 2 (8.3) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
Negative samples were considered only for growth under aerobic conditions.