Caracterización de Cepas de Virus Sincitial Respiratorio en el Gran Buenos Aires y Aspectos de su Diseminación
; Alvarez, Daniela ; Musto, Alejandra ; Montali, César ; Sancillo, Andrea ; Hamilton, Gabriela ; Garcia, Carolina ; Sosa, Liliana del Valle
; Orellana, Mariana Laura
; Viegas, Mariana 
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Fecha
09/2017
Editorial
Ministerio de Salud de la Nación
Revista
Revista Argentina de Salud Pública
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1852-8724
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El virus sincitial respiratorio (VSR) es el agente viral más frecuente de infecciones respiratorias agudas bajas (IRAB) en la primera infancia y el mayor responsable de las hospitalizaciones en el período invernal. OBJETIVOS: Describir las características de los brotes de VSR en la Zona Sanitaria VI de la provincia de Buenos Aires, establecer la diversidad de las cepas circulantes y realizar el análisis bioinformático y filogeográfico de las secuencias de la glicoproteína G. MÉTODOS: Se estudió a pacientes pediátricos internados con presentación compatible con IRAB durante dos picos epidémicos (2014-2015) en cuatro hospitales. Se recopilaron datos clínicos, demográficos y socio-sanitarios, y se detectaron patógenos virales en aspirados nasofaríngeos de estos pacientes por inmunofluorescencia (IF), obteniéndose la secuencia del gen de la proteína G en los VSR positivos. RESULTADOS: De 1296 casos estudiados, 317 fueron positivos para algún agente viral. De ellos, 266 (84%) fueron VSR positivos. Se hallaron asociaciones significativas entre las poblaciones positivas y negativas para VSR. Una tendencia al hacinamiento y vivienda precaria en los casos VSR positivos fue reflejada en los estudios filogeográficos
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 x|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
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 x|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
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