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Revista Argentina de Salud Pública

versión impresa ISSN 1852-7513versión On-line ISSN 1853-810X


CASTELLO, Alejandro et al. Characterization of Respiratory Syncytial Virus Strains in the Greater Buenos Aires and Spreading Aspects. Rev. argent. salud pública [online]. 2017, vol.8, n.32, pp.19-25. ISSN 1852-7513.

INTRODUCTION: The respiratory syncytial virus (RSV) is the most frequent viral agent associated to acute lower respiratory infections (ALRIs) in early childhood, being the main responsible for hospitalizations during winter. OBJECTIVES: To describe the characteristics of RSV outbreaks in the Health Area VI of Buenos Aires Province, to establish the diversity of circulating strains and to perform a bioinformatic and phylogeographic analysis of glycoprotein G sequences. METHODS: Pediatric inpatients with ALRI-compatible ^presentation during two epidemic peaks (2014-2015) were studied in four hospitals. Clinical, demographic and socio-sanitary data were collected, viral pathogens were detected by immunofluorescence (IF), and the sequence of the G protein gene was obtained in the positive RSVs. RESULTS: From 1296 cases, 317 were positive for some viral agent and 266 (84%) out of these were RSV positive. Significant associations were found among the positive and negative populations for RSV. A trend towards overcrowding and precarious housing in positive RSV cases was reflected in phylogeographic studies. CONCLUSIONS: The molecular signature data allowed tracing origins and routes of RSV dissemination. This helps identify areas and situations of vulnerability, establishing the primary target population for vaccination plans or other prophylactic measures.

Palabras clave : Respiratory Syncytial Virus; Acute Lower Respiratory Infection, Vulnerability; Molecular Epidemiology; Genotype.

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