Fig. 2.

Summary of amino acid changes and frequencies in HVR-2 of the G gene of genotype GA5 (n = 3), NA1 (n = 6), ON1 (n = 512), SAB4 (n = 3), and BA9 (n = 193) comparing with their reference sequences. The earliest sequence of each genotype was used as the reference (GA5: Mon/1/01, AF516135; NA1: NG-016–04, AB470478; ON1: ON67-1210, JN257693; SAB4: Cam2009-0351, JN119976; BA9: BA/100/04, DQ227395). Only sites with a substitution frequency of more than 2% are indicated. For the RSV-A ON1 and RSV-B BA9 genotypes, these substitution frequency more than 5% or 10% were marked with orange and red label, respectively.