About respiratory syncytial virus (RSV)
RSV is a common respiratory illness. While RSV causes cold-like symptoms, it often progresses to LRTI (bronchiolitis and pneumonia) in infants, making it the leading cause of infant hospitalization.1* For this reason, severe RSV disease is unpredictable. Any infant can be hospitalized in their first season.2†
*According to a study of pediatric hospitalizations between 1997 and 2000.
†Surveillance data between October 2014 and April 2015. Among 1,176 RSV-hospitalized infants aged 12
months or under, 851 had no reported underlying condition (prematurity was classified as an underlying
condition in the study).
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References: 1. Leader S, Kohlhase K. Recent trends in severe respiratory syncytial virus (RSV) among US infants, 1997 to 2000. J Pediatr. 2003;143(5 Suppl):S127-S132. 2. Arriola CS, Kim L, Langley G, et al. Estimated burden of community-onset respiratory virus–associated hospitalizations among children aged less than 2 years in the United States, 2014-15. J Pediatric Infect Dis Soc. 2020;9(5):587-595.