rinovirus: frecuencia en niños con infección respiratoria aguda, no internados rhinoviruses: frequency in nonhospitalized children with acute respiratory infection

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ID: 191372
2012
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Ranked #10 of 101 articles by views in proceedings on: 2016 ieee central america and panama student conference, conescapan 2016

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Abstract
Los métodos moleculares para diagnosticar rinovirus humanos (RVH) han aumentado la sensibilidad de detección. Esto ha permitido documentar la asociación entre los RVH y las infecciones respiratorias agudas (IRA) altas y bajas. La infección por RVH durante la infancia se asoció con posterior desarrollo de asma. Se estudió la frecuencia de RVH en 186 niños menores de 6 años ambulatorios con IRA (alta o baja), durante 2 años consecutivos (1/6/2008 - 31/5/2010). Se correlacionó la presencia de RVH con los antecedentes y características clínico-epidemiológicas. La detección de RVH se realizó con una RT-PCR en tiempo real que amplifica parte de la región 5' no codificante del genoma. Los virus respiratorios clásicos se estudiaron por inmunofluorescencia. En el 61% de los niños se detectó etiología viral. Las frecuencias fueron: RVH 27%, virus sincicial respiratorio (VSR) 16%, influenza A y B 9%, parainfluenza 8%, metapneumovirus 7% y adenovirus 0.5%. Se observaron coinfecciones duales en 8 casos, siendo RVH el más frecuente (en 4 de ellos). Los RVH circularon durante todo el período estudiado, con picos en invierno y primavera. No se observaron diferencias clínico-epidemiológicas significativas entre pacientes con o sin RVH, excepto un mayor porcentaje de niños afebriles con RVH. Los RVH fueron los virus más detectados en niños ambulatorios, principalmente en menores de 2 años, los segundos virus asociados a bronquiolitis, luego del VSR, y detectados tres veces más en los niños expuestos a tabaquismo pasivo (OR: 2,91; p = 0.012) que en el resto. Fueron identificados como único agente en el 28% de las bronquiolitis.
Molecular methods for human rhinoviruses (HRV) have increased the sensitivity in their diagnosis. HRV may cause acute respiratory infections (ARI) of the upper and lower respiratory tract. HRV infection during childhood is a predictor of asthma development. In this study, the HRV frequency in outpatient children with ARI was determined, and their clinical features and previous conditions were evaluated. A total of 186 respiratory samples of children under 6 year old attending the CEMIC pediatric emergency room from June 1, 2008 to May 31, 2010, were studied. Classical respiratory viruses were detected by immunofluorescence. A real time RT-PCR that amplifies part of the 5' non coding genomic region was used for HRV detection. Viral detection was obtained in 61% of children. The frequency was: 27% for HRV, 16% for respiratory syncytial virus (RSV), 9% for influenza, 8% for parainfluenza, 7% for metapneumovirus and 0.5% for adenovirus. Dual coinfection was detected in 8 children and HRV were the most frequent, detected in 4 of them. HRV circulated during the two year period of the study, with peaks during winter and spring. No clinical difference was observed between patients with or without HRV, except an increase percent of children with HRV without fever. HRV were the most frequent viruses detected in this population, mainly in children under 2 year old, the second cause of bronchiolitis after RSV and more frequently detected in children exposed to passive smoking (OR = 2.91; p = 0.012), and were detected as the sole etiologic agent in 28% of bronchiolitis.
Reference Key
marcone2012medicinarinovirus: Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Débora N. Marcone;Carmen Ricarte;Cristina Videla;Jorge Ekstrom;Guadalupe Carballal;Santiago Vidaurreta;Marcela Echavarría
Journal proceedings on: 2016 ieee central america and panama student conference, conescapan 2016
Year 2012
DOI
DOI not found
URL
http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0025-76802012000100007
Keywords
human rhinovirus bronchiolitis real-time rt-pcr allergyinfectious and parasitic diseases niños

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