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The COVID-19 pandemic disrupted hRSV transmission due to non-pharmaceutical interventions (NPI), resulting in atypical circulation patterns, earlier seasonal peaks, and increased post-pandemic prevalence. Two key factors are proposed to underlie these changes: a reduced specific immune response due to decreased viral exposure and the emergence of novel hRSV variants. These factors contributed to a larger cohort of immunologically na\u00efve children and lower levels of maternally derived antibodies, increasing susceptibility to severe hRSV disease, particularly in infants and children. Additionally, adults experienced waning immunity following prolonged periods of limited hRSV circulation. The post-pandemic resurgence was accompanied by the emergence of novel hRSV variants with altered transmissibility and virulence, such as GB5.0.6a in Europe and B.D.E.1 in China. 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