Figure 2 . Phylogenetic tree of genomes of RSV-A (A) and RSV-B (B) from Asturias (black circles) and NCBI. The geographical origins of the NCBI sequences phylogenetically related to those of Asturias are indicated.
In 2021, a new RVS-B sublineage spread in Asturias, characterized by the S263G mutation). In 2022, two new sublineages from ON1 spread in Asturias, one characterized by the S299I mutation (n=8) and the other by the K205N and Y280H mutations (n=26) (Table 3, Figure 3).
Table 3. Characteristics of the sublineages identified during 2021–22 in Asturias (Spain).