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BACKGROUND Although respiratory syncytial virus (RSV) is the leading cause of pediatric lower respiratory tract infections, the burden of RSV in children with sickle cell disease (SCD) is unknown. METHODS We conducted a retrospective, nested, case-control study of children with SCD <18 years who had respiratory viral panels (RVPs) performed at Children\'s Healthcare of Atlanta from 2012 to 2019. We abstracted the medical records to describe the demographics, clinical features, and outcomes of children who tested positive for RSV (cases) versus children who tested negative (controls). We calculated the annual incidence of RSV and related hospitalization rates with 95% confidence intervals (CIs) and used multivariate logistic regression to evaluate associations. RESULTS We identified 3676 RVP tests performed on 2636 patients over seven respiratory seasons resulting in 219/3676 (6.0%) RSV-positive tests among 160/2636 (6.1%) patients. The average annual incidence of laboratory-confirmed RSV infection among children with SCD was 34.3 (95% CI 18.7-49.8) and 3.8 (95% CI 0.5-7.0) cases per 1000 person-years for those <5 years and 5-18 years, respectively. The RSV-related hospitalization rate for children <5 years was 20.7 (95% CI 8.5-32.8) per 1000 person-years. RSV-positive cases were significantly younger than RSV-negative patients (3.8 years vs 7.6 years, P < .001). Of RSV-positive cases, 22 (13.8%) developed acute chest syndrome and nine (5.6%) required intensive care, which was not significantly different from RSV-negative children with SCD. CONCLUSION RSV infections are common in children with SCD with higher burden in younger patients. RSV is associated with considerable morbidity, including higher rates of hospitalization compared to the general population.
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The burden of respiratory syncytial virus infections among children with sickle cell disease.
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