**5. Conclusions**

Direct partial F gene sequencing represents an accurate method for hRSV-A genotyping that matched partial G gene sequencing results. The current study provides evidence of the circulation of GA5, NA1, and ON1 genotypes in Saudi Arabia. Although mutations in conserved or escape-mutant domains were detected in both F and G proteins, most of them do not a ffect the virus' virulence.

**Author Contributions:** D.A.A., N.M.A.A., and A.S.A.-M. designed the primers, conducted the RT-PCR, and analyzed the sequences. M.I.R.A.-M. and A.S.A.-M. conceived the study design. D.A.A. and N.M.A.A. drafted the manuscript. A.S.A.-M. and M.I.R.A.-M. critically revised the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The authors have no conflicts of interest to declare.
