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Volume 32, Number 5—May 2026

Research Letter

Human Respiratory Syncytial Virus in Vaccinated and Unvaccinated Adults, Georgia, USA, 2024–2025

Saïd Rachida1, Alaa Ahmed1, Diana Rojas-Gallardo, Henok Tafesse, Hannah Dakanay, Mackenzie Duford, Collin Tolbert, Ryan S. Springfield, and Anne PiantadosiComments to Author 
Author affiliation: Emory University School of Medicine, Atlanta, Georgia, USA (S. Rachida, A. Ahmed, D. Rojas-Gallardo, H. Dakanay, M. Duford, C. Tolbert, R.S. Springfield, A. Piantadosi); Morehouse School of Medicine, Atlanta, Georgia (H. Tafesse, C. Tolbert); Medical College of Georgia, Athens, Georgia, USA (R.S. Springfield)

Main Article

Figure

Maximum-likelihood phylogenetic trees of respiratory syncytial virus (RSV) A and RSV-B sequences from adults with RSV infection in Georgia, USA, 2024–2025. A) RSV-A sequences mainly clustered within lineages A.D.3.1 and A.D.5.2. B) RSV-B sequences mainly clustered within lineage B.D.E.1. There was limited clustering of the Georgia sequences obtained in this study (red branches), and RSV sequences from vaccinated persons (orange dots) were distributed throughout the tree. For ease of visualization, Panel B of this figure omits lineage B.D.4.1.1; that lineage is included in Appendix 1 Figure 2. Reference sequences are listed in Appendix 2. Scale bars indicate nucleotide substitutions per site.

Figure. Maximum-likelihood phylogenetic trees of respiratory syncytial virus (RSV) A and RSV-B sequences from adults with RSV infection in Georgia, USA, 2024–2025. A) RSV-A sequences mainly clustered within lineages A.D.3.1 and A.D.5.2. B) RSV-B sequences mainly clustered within lineage B.D.E.1. There was limited clustering of the Georgia sequences obtained in this study (red branches), and RSV sequences from vaccinated persons (orange dots) were distributed throughout the tree. For ease of visualization, Panel B of this figure omits lineage B.D.4.1.1; that lineage is included in Appendix 1 Figure 2. Reference sequences are listed in Appendix 2. Scale bars indicate nucleotide substitutions per site.

Main Article

1These authors contributed equally to this article.

Page created: April 28, 2026
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