BACKGROUND: Little is known about the incidence and etiology of healthcare-associated infections in immunosuppressed children. METHODS: Data collected prospectively between 1983 and 2008 were used to analyze changes in the rate, types of infection, and infecting organisms over time in patients treated at a children's cancer hospital. Neutropenia was evaluated as a risk factor. RESULTS: Over the 26-year study period, 1986 healthcare-associated infections were identified during 1653 hospitalizations. The infection rate decreased significantly from 5.6 to 2.0 infections per 100 discharges (P < .01) and from 9.0 to 3.7 infections per 1000 patient-days (P < .01). Bloodstream infections were the most common type of infection (32.7% of all infections). Staphylococci (46.4% of Gram-positive bacteria), Escherichia coli (36.7% of Gram-negative bacteria), and Candida spp. (68.7% of fungi) were the most common pathogens isolated. An absolute neutrophil count (ANC) nadir <100 per mm(3) was significantly associated (P < .0001) with an increased rate of infections compared with higher ANC nadirs. CONCLUSIONS: Despite a steady expansion in hospital capacity and patient encounters over the last 3 decades, rates of healthcare-associated infections decreased significantly at our hospital. These data suggest that sustained decreases in the rate of healthcare-associated infections in immunosuppressed children are possible. An ANC <100 per mm(3) is a risk factor for healthcare-associated infections in this population.
BACKGROUND: Little is known about the incidence and etiology of healthcare-associated infections in immunosuppressed children. METHODS: Data collected prospectively between 1983 and 2008 were used to analyze changes in the rate, types of infection, and infecting organisms over time in patients treated at a children's cancer hospital. Neutropenia was evaluated as a risk factor. RESULTS: Over the 26-year study period, 1986 healthcare-associated infections were identified during 1653 hospitalizations. The infection rate decreased significantly from 5.6 to 2.0 infections per 100 discharges (P < .01) and from 9.0 to 3.7 infections per 1000 patient-days (P < .01). Bloodstream infections were the most common type of infection (32.7% of all infections). Staphylococci (46.4% of Gram-positive bacteria), Escherichia coli (36.7% of Gram-negative bacteria), and Candida spp. (68.7% of fungi) were the most common pathogens isolated. An absolute neutrophil count (ANC) nadir <100 per mm(3) was significantly associated (P < .0001) with an increased rate of infections compared with higher ANC nadirs. CONCLUSIONS: Despite a steady expansion in hospital capacity and patient encounters over the last 3 decades, rates of healthcare-associated infections decreased significantly at our hospital. These data suggest that sustained decreases in the rate of healthcare-associated infections in immunosuppressed children are possible. An ANC <100 per mm(3) is a risk factor for healthcare-associated infections in this population.
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