FIG 3.

2stop+A4G G gene end variants in recently circulating strains. RSV G sequences from 51 samples collected between 2009 and 2017 were analyzed for the presence of wild-type, A4G, or 2stop+A4G G gene end variations. All additional sequences, bar 1 which had a wild-type gene end signal, displayed the 2stop+A4G gene end variation. In contrast, previously analyzed sequences (samples collected between 1981 and 2008) showed a mix of all three variants, with the 2stop+A4G variation making up a lesser proportion of the gene end variants.