Fig. 4.
Phylogenetic analysis of the 2nd half of the G gene of the RSV strains circulating in Italy (December 2018–April 2019). The phylogenetic tree of RSV-A (panel a) includes 77 GLIViRe sequences and 7 reference strains; the RSV-B tree (panel b) includes 181 GLIViRe sequences and 8 reference strains. The legend on the left indicates the symbols’ shape and filling for reference strains and the GLIViRe centers. The number of occurrences of identical RSV sequences from a center is reported in parenthesis. Numbers at nodes are bootstrap values for 1,000 iterations; only bootstrap values of > 50% are shown. Below the trees, scale bar shows the number of substitutions per site