Circulation of RSV Subtypes A and B Among Mexican Children During the 2021-2022 and 2022-2023 Seasons.

ABSTRACT: Respiratory syncytial virus (RSV) remains a leading cause of pneumonia in young children in Mexico and worldwide. To investigate RSV dynamics in Mexico, we conducted a multicenter study from August 2021 to July 2023 in six hospitals across five States, analyzing respiratory samples from children under five years with pneumonia. Multiplex RT-PCR identified 203 RSV-positive cases, of which 123 were RSV-B and 80 RSV-A. Interestingly, 77% of the collected samples showed evidence of coinfection with other respiratory pathogens, with rhinovirus, Haemophilus influenzae, and Streptococcus pneumoniae being the most common. Also, RSV-B dominated in 2021-2022, whereas RSV-A prevailed in 2022-2023, mirroring trends observed in the United States. Sequences of the genes encoding G and F pr

SUBMITTER: Zarate S 

PROVIDER: S-EPMC12567045 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature