Phylogenetic tree based on partial G gene sequences of RSV-A strains (nt 634–897).

<p>The sequences originally found in this study are indicated by black, blue and green circles (n = 131); the other Italian reference sequences are indicated by red circles (n = 3). The RSV-A reference stains are in bold (n = 32). Significant amino acid changes are reported along the tree branch or near the strain name. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The evolutionary distances were computed using the Tamura-Nei method.