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Universal varicella vaccination in Denmark: Modeling public health impact, age-shift, and cost-effectiveness

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  • Colleen Burgess
  • Salome Samant
  • Thomas leFevre
  • Carsten Schade Larsen
  • Manjiri Pawaskar

Abstract

We modeled the long-term clinical and economic impact of two-dose universal varicella vaccination (UVV) strategies in Denmark using a dynamic transmission model. The cost-effectiveness of UVV was evaluated along with the impact on varicella (including age-shift) and herpes zoster burden. Six two-dose UVV strategies were compared to no vaccination, at either short (12/15 months) or medium (15/48 months) intervals. Monovalent vaccines (V-MSD or V-GSK) for the 1st dose, and either monovalent or quadrivalent vaccines (MMRV-MSD or MMRV-GSK) for the 2nd dose were considered. Compared to no vaccination, all two-dose UVV strategies reduced varicella cases by 94%-96%, hospitalizations by 93%-94%, and deaths by 91%-92% over 50 years; herpes zoster cases were also reduced by 9%. There was a decline in the total number of annual varicella cases in all age groups including adolescents and adults. All UVV strategies were cost-effective compared to no vaccination, with ICER values ranging from €18,228-€20,263/QALY (payer perspective) and €3,746-€5,937/QALY (societal perspective). The frontier analysis showed that a two-dose strategy with V-MSD (15 months) and MMRV-MSD (48 months) dominated all other strategies and was the most cost-effective. In conclusion, all modeled two-dose UVV strategies were projected to substantially reduce the clinical and economic burden of varicella disease in Denmark compared to the current no vaccination strategy, with declines in both varicella and zoster incidence for all age groups over a 50-year time horizon.

Suggested Citation

  • Colleen Burgess & Salome Samant & Thomas leFevre & Carsten Schade Larsen & Manjiri Pawaskar, 2023. "Universal varicella vaccination in Denmark: Modeling public health impact, age-shift, and cost-effectiveness," PLOS Global Public Health, Public Library of Science, vol. 3(4), pages 1-16, April.
    • Handle: RePEc:plo:pgph00:0001743
    DOI: 10.1371/journal.pgph.0001743
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