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.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310097PMC
http://dx.doi.org/10.3201/eid1801.110515DOI Listing

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