Nosocomial bloodstream infections in children and adolescents in southern Israel: A 10-year prospective study (1992–2001)

Abstract

We studied the epidemiology, microbiology, clinical presentation and outcome of nosocomial bloodstream infections (NBI) in children and adolescents in southern Israel during 1992–2001. Information on NBI was collected prospectively by active surveillance. NBI was diagnosed when a clinically significant positive blood culture was drawn in a patient during >48 h after admission. 469 episodes occurred in 370 children and adolescents aged 1 m–18 y. The overall incidence of NBI was 5.3/1000 patients, with no increase during the study period. A significant decrease in NBI incidence was recorded at the neonatal intensive care unit (NICU) during 1997–2001 vs 1992–1996. The incidences of NBI at the paediatric ICU (PICU), paediatric wards and paediatric surgery departments (PSD) were 24.1, 2.8 and 2.5/1000 patients, with an increase in NBI cases at PICU and PSD during 1997–2001 vs 1992–1996. Of 661 pathogens, Gram-negative, Gram-positive and fungal organisms were isolated in 54.3%, 36.6% and 9.1% of cases, respectively. Enterobacteriaceae (34.6% of all isolates) were the most frequently isolated Gram-negative organisms. Enterococcus spp., coagulase-negative staphylococci and Staphylococcus aureus (9.5% of all isolates each) were the most frequently isolated Gram-positive organisms. A significant increase was recorded in the incidence of NBI caused by Streptococcus pneumoniae and Pseudomonas spp. A significant decrease in the susceptibility of Enterobacteriaceae spp. to piperacillin, ceftazidime, gentamicin and ceftriaxone was recorded during the study period. 33 (8.9%) patients with NBI died.