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Pediatría (Asunción)

On-line version ISSN 1683-9803


ARAYA, Soraya et al. Community-acquired Staphylococcus aureus bacteriology: clinical behavior and severity in children. Pediatr. (Asunción) [online]. 2018, vol.45, n.3, pp.201-205. ISSN 1683-9803.


Bacteremia due to Staphylococcus aureus (SA) is one of the most serious infections in the pediatric population. Objectives: To evaluate the epidemiological, clinical and laboratory characteristics of children with bacteremia due to SA acquired in the community (SAAC) and to identify risk factors associated with mortality.

Materials and methods:

This was a retrospective study in which patients (pts) ≤16 years, hospitalized between 2010-2018, with dx of bacteremia by SAAC were included. Clinical and laboratory data were entered into an Excel database and formatted for analysis.


We identified 117 pts with an average age of 56 + 53 months, of which 81 were ≤5 years. Bacteremia was associated mainly with pneumonia (47% of the cases), presenting with shock in 38% and admission to the ICU in 40% of the pts. In 27% (32/117) the bacteremia was caused by MRSA. Age <5 years (p = 0.0001), presence of shock (p = 0001), hospitalization in the ICU (p = 0.002, OR 3.58, 95% CI 1.5-8.3) and mortality (p = 0.03, OR 2.65, 95% CI 1.05-6.7) were associated with MRSA infection. The mortality in this series was 21% (25/117). The presence of comorbidities (p = 0.006, OR3.66, 95% CI 1.4-92), shock (p = 0.0001, OR 87.6, 95% CI 11.5-687.7), multiple infectious foci (p = 0.007, OR3.46, 95% CI 1.3-8.9), MRSA isolation (p = 0.03, OR 2.65, 95% CI 1.1-6.7), and thrombocytopenia <100 000 / mm3 (p = 0.0001, OR 25.3, 95% CI 5-128) were associated with mortality.


This study shows the severity of SA bacteremia. Methicillin resistance, comorbidities, the presence of multiple infectious foci and shock were identified as factors associated with mortality.

Keywords : Bacteremia; Staphylococcus aureus; children..

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