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Rationale for Recommending Varicella Vaccination Into the Swedish National Immunisation Programme

Year: 2026

Type: article

Abstract: AIM: Under Swedish law, a vaccination may be included in the National Immunisation Programme (NIP) if it effectively prevents transmission in the population, is cost-effective and aligns with ethical and humanitarian principles. The Public Health Agency of Sweden (PHAS) evaluated these criteria for introducing varicella vaccination. METHODS: The evaluation included a literature review, disease modelling to assess dose timing, a health economic analysis and an ethical review addressing vaccine acceptance and equitable access. RESULTS: Varicella vaccines are safe and highly effective, providing near-complete protection against severe disease requiring hospitalisation when two doses are given. Modelling indicates that virus circulation could be eliminated within 2-3 years with high coverage and catch-up vaccination, also protecting unvaccinated and immunocompromised individuals of all ages through population immunity. Two doses are recommended at 18 months and 7-8 years, both co-administered with MMR. This schedule ensures durable immunity and high acceptance. Health economic analyses show the programme would be cost saving. CONCLUSION: Following PHAS's evaluation, the Swedish government has decided to include varicella vaccination in the NIP from 2027, with catch-up vaccination for susceptible individuals up to 18 years, implemented primarily through the child and school health services to ensure equitable access.

Source: Acta Paediatrica

DOI: 10.1111/apa.70497

Authors: Annika Ersson, Kari Johansen, Sören Andersson

Institutions: Public Health Agency of Sweden, Region Jämtland Härjedalen

Language: English

Topic: Herpesvirus Infections and Treatments

Subfield: Epidemiology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $4,480