Figure 2.

Phylogenetic analysis of RSV G gene sequences in Beijing from 2017 to 2021. (A) ON1 was the predominant prevalent genotype of RSV‐A. Three clusters were divided in phylogenetic trees. (B) BA9 was the predominant prevalent genotype of RSV‐B. Six clusters were divided in phylogenetic trees. These trees were constructed using the maximum likelihood method from 1000 bootstrap samplings by iq‐Tree. Each reference sequence was labeled by GenBank accession number, followed by location and year. Sequences collected in the study were labeled by laboratory number, location and time (m/y). The ON1 and BA9 references are indicated in green, and the other references are indicated in blue. Sequences collected before NPIs launched are shown in red, and sequences collected after NPIs launched are shown in yellow. NPI, nonpharmaceutical interventions; RSV, respiratory syncytial virus.