Fig. 4: Phylogenetic analysis of RSV-A and -B whole genome sequences.

a Maximum likelihood (ML) phylogenetic analysis of RSV-A whole genome sequences from NM-affiliated institutions in Chicago, Illinois from 2018 to 2022 (n = 110). b Equivalent ML phylogenetic analyses of RSV-B whole genome sequences from NM-affiliated institutions in Chicago, Illinois from 2017 to 2022 (n = 108). c ML phylogenetic analysis of RSV-A whole genome sequences from NM-affiliated institutions in Chicago, Illinois with publicly available genomes from the United States (US) collected from 1956 to 2022 (as of March 1st, 2023) (n = 450). d ML phylogenetic analysis of RSV-B whole genome sequences from NM-affiliated institutions in Chicago, Illinois with publicly available genomes from the US collected from 1979 to 2022, n = 221. For all trees, branch tips are colored by state of origin, the inner ring is colored by time (blue = before May 2020, red = after May 2020), and the outer ring is colored by clade as designated by Nextclade v2.14.1 (refer to Supplementary Table 1).