Abstract

To assess molecular evolution of the respiratory syncytial virus (RSV) fusion gene, we analyzed RSV-positive specimens from 123 children in Canada who did or did not receive RSV immunoprophylaxis (palivizumab) during 2006–2010. Resistance-conferring mutations within the palivizumab binding site occurred in 8.7% of palivizumab recipients and none of the nonrecipients.

Highlights

  • Human respiratory syncytial virus (RSV) is the most common cause of acute respiratory tract infections (RTIs) and a major cause of hospital admission and death among children

  • F-gene analysis was performed on 11 RSV-positive clinical samples from palivizumab recipients retrospectively identified by using neonatal clinic registries at McMaster Children’s Hospital (Hamilton, Ontario, Canada) and Montréal Children’s Hospital (Montréal, Québec, Canada) during 2009–2010

  • Along with the newly generated nucleotide sequences from the 123 children (23 palivizumab recipients; 100 nonrecipients), we analyzed 92 clinical respiratory syncitial virus fusion (RSV-F) sequences provided by other investigators [10,11] or available from GenBank

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Summary

The Study This cohort study was approved by the Centre

Participants were

Molecular Evolution of RSV Fusion Gene
Conclusions
Findings
Cystic fibrosis

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