Eine große (N=83.000) japanische Registerstudie untersuchte die Impfstoff-Effektivität der Influenza-Impfung für Ältere zwischen 2014 und 2020.
Die Impfung konnte das Risiko einer Hospitalisierung wegen Influenza in dieser Altersgruppe nicht reduzieren.
Duration of influenza vaccine effectiveness in the elderly in Japan: A retrospective cohort study using large-scale population-based registry data
Our study identified moderate vaccine effectiveness in preventing the incidence of influenza in the Japanese elderly. Vaccine effectiveness showed a trend of gradual attenuation. Clinicians should suspect influenza infection even in those vaccinated, especially in elderly individuals who had receive …