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  • Title: Severe Respiratory Syncytial Virus Infection in Hospitalized Children.
    Author: González-Ortiz AM, Bernal-Silva S, Comas-García A, Vega-Morúa M, Garrocho-Rangel ME, Noyola DE.
    Journal: Arch Med Res; 2019 Aug; 50(6):377-383. PubMed ID: 31678896.
    Abstract:
    BACKGROUND: Lower respiratory tract infections (LRTI) are one of the most common causes of death worldwide. Respiratory syncytial virus (RSV) is a leading cause of LRTI in children. Despite of its epidemiological importance, there is limited information regarding the impact of this virus in Latin America. AIMS OF THE STUDY: We carried out a prospective study to establish the frequency and characteristics of RSV infections in hospitalized Mexican children. METHODS: 1,252 children hospitalized between November, 2012 and December, 2015 because of LRTI were included in the study. A respiratory sample was obtained for RSV detection by RT-PCR and information regarding clinical presentation, hospital course, and outcome was recorded. RESULTS: RSV was detected in 43.7% of children admitted with LRTI, in 43.3% of those admitted to the intensive care unit (ICU), and in 36.4% of those who died. Infants with RSV infection were younger, were diagnosed with bronchiolitis more frequently, and were less likely to have underlying disorders than those with RSV-negative LRTI. Among RSV-positive infants, admission to the ICU was associated with the presence of underlying conditions, pneumonia diagnosis, and young age. Four (0.73%) of the 547 infants with RSV infection died; death was more common in those with underlying disorders than previously healthy infants (3.8 vs. 0.2%, respectively; p = 0.02). CONCLUSION: RSV contributes to a large proportion of LRTI hospital admissions. Most children admitted with RSV infection do not have underlying conditions. However, severe infection requiring ICU admission and death are more common in those with underlying disorders.
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