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Revista de la Sociedad Boliviana de Pediatría

versión On-line ISSN 1024-0675


BAUER, Gabriela; DUSSEL, Verónica; FARINA, Diana  y  RODRIGUEZ, Susana. Respiratory syncitial virus infection in vulnerable population: biological risk versus social risk. Rev. bol. ped. [online]. 2007, vol.46, n.1, pp.59-65. ISSN 1024-0675.

Introduction. Preterm infants and those carrying bronchopulmonary dysplasia have a higher risk of hospitalization because of respiratory syneytial virus infection. Palivizumab is an expensive drug that has been approved in Argentina. The lack of epidemiological data about respiratory syneytial virus infection hospitalizations in high-risk populations precludes extrapolation of the American Academy of Pediatrics guidelines to the Argentine population. Few studies have explored social risk in the biologically vulnerable groups for this severe infection. Objective. To explore the association between biologic and socio-economic factors, and severe forms of respiratory syneytial virus infection in preterm babies with or without bronchopulmonary dysplasia. Population, material and methods. The study design is a case-control study. Inclusion criteria: children who attended to the neonatal high-risk clinic followup program and met the criteria of the American Academy of Pediatrics guidelines during a five year period (May to September 1998-2002). Biological and social risk variables were investigated. Results. Of the 121 patients who fulfilled the inclusion criteria; 30 patients (25%) required hospitalization (cases) and 91 did not require hospitalization (controls). For the analyzed biological variables of risk, the cases had birth weights and gestational ages greater than controls (329 g ± 450 versus 1,145 g ± 393). There were not significant differences in their variables of biological risk. Only siblings or other children in the household younger than ten years of age and mothers with incomplete primary school were associated with increased risk of hospitalization (OR 5.4, CI 95% 1.7-16; OR 5.8 CI 95% 2.2-15.4). Conclusions. We conclude that the biological risk factors currently used in developed countries are inadequate to define the risk for respiratory syncitial virus infection hospitalization in low socioeconomic groups in developing countries, and that social factors (i.e.: maternal education and the number of siblings) were strongly associated to serious infection by respiratory syneytial virus.

Palabras clave : Respiratory syncytial virus; prophylaxis; social risk.

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