Chia‐Yu Chi, Ming‐Fang Cheng, Karam Ko, Joaquin F. Mould, Chih‐Jung Chen, Yhu‐Chering Huang, Ping‐Ing Lee

Cost‐effectiveness analysis of cell‐based versus egg‐based quadrivalent influenza vaccines in the pediatric population in Taiwan

  • Infectious Diseases
  • Virology

AbstractCell‐based influenza vaccines avoid egg‐adaptive mutations, potentially improving vaccine effectiveness. We assessed the one‐season cost‐effectiveness of cell‐based quadrivalent influenza vaccine (QIVc) against that of egg‐derived quadrivalent influenza vaccines (QIVe) in children (6 months to 17 years of age) from payer and societal perspectives in Taiwan using an age‐stratified static model. Base case and high egg adaptation scenarios were assessed. Deterministic and probabilistic sensitivity analyses were performed. The incremental cost‐effectiveness ratio (ICER) threshold in Taiwan was assumed to be USD 99 177/quality‐adjusted life year (QALY). Compared to QIVe, QIVc would prevent 15 665 influenza cases, 2244 complicated cases, and 259 hospitalizations per year. The base case ICER was USD 68 298/QALY and USD 40 085/QALY from the payer and societal perspective, respectively. In the high egg adaptation scenario, the ICER was USD 45 782/QALY from the payer's perspective and USD 17 489/QALY from the societal perspective. Deterministic sensitivity analyses indicated that infection incidence rate, vaccination coverage, and prevalence of the A/H3N2 strain were the main drivers of ICER. In conclusion, switching the immunization strategy from QIVe to QIVc is predicted to reduce the influenza‐associated disease burden and be cost‐effective for the pediatric population in Taiwan. The potential benefits of QIVc would be even higher during influenza seasons with high levels of egg adaptation.

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