Table 3.
Episodes of laboratory-confirmed bloodstream infection in different age groups of children
| Organism* | Early onset† N (%) | Late onset‡ N (%) | Older§ N (%) | Total N (%) |
| Klebsiella spp. | 17 (31.5) | 7 (22.6) | 12 (7.1) | 36 (14.1) |
| Salmonellae | 0 (0.0) | 1 (3.2) | 32 (18.8) | 33 (12.9) |
| Escherichia coli | 6 (11.1) | 3 (9.7) | 19 (11.2) | 28 (11.0) |
| Enterobacter spp. | 4 (7.4) | 1 (3.2) | 2 (1.2) | 7 (2.7) |
| Other Enterobacteriaceae | 1 (1.9) | 0 (0.0) | 1 (0.6) | 2 (0.8) |
| Total Enterobacteriaceae | 28 (51.9) | 12 (38.7) | 66 (38.8) | 106 (41.6) |
| Acinetobacter spp. | 1 (1.9) | 0 (0.0) | 10 (5.9) | 11 (4.3) |
| Pseudomonas aeruginosa | 0 (0.0) | 0 (0.0) | 9 (5.3) | 9 (3.5) |
| Other non-Enterobacteriaceae | 4 (7.4) | 0 (0.0) | 5 (2.9) | 9 (3.5) |
| Total non-Enterobacteriaceae | 5 (9.3) | 0 (0.0) | 24 (14.1) | 29 (11.4) |
| GNR not further specified | 1 (1.9) | 1 (3.2) | 5 (2.9) | 7 (2.7) |
| Total GNR | 34 (63.0) | 13 (41.9) | 95 (55.9) | 142 (55.7) |
| Staphylococcus aureus | 6 (11.1) | 5 (16.1) | 15 (8.8) | 26 (10.2) |
| Enterococci | 3 (5.6) | 4 (12.9) | 23 (13.5) | 30 (11.8) |
| Group B streptococci | 2 (3.7) | 1 (3.2) | 0 (0.0) | 3 (1.2) |
| Other Streptococcus | 1 (1.9) | 0 (0.0) | 2 (1.2) | 3 (1.2) |
| Total Gram positive | 12 (22.2) | 10 (32.3) | 40 (23.5) | 62 (24.3) |
| Mycobacterium tuberculosis | 0 (0.0) | 0 (0.0) | 1 (0.6) | 1 (0.4) |
| Candida spp. | 1 (1.9) | 3 (9.7) | 15 (8.8) | 19 (7.5) |
| Polymicrobial infections | 7 (13.0) | 5 (16.1) | 19 (11.2) | 31 (12.2) |
| Total | 54 (100.0) | 31 (100.0) | 170 (100.0) | 255 (100.0) |
GNR, Gram-negative rods. *The percentage refers to the proportion of all episodes of laboratory-confirmed bloodstream infection. Anaerobes, coagulase-negative staphylococci and bacterial isolates of uncertain pathogenicity were not included. † Early-onset = age 0–6 days. ‡ Late-onset = age 7–30 days. † Older = 1 month – 7 years.