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Author

Hanna Bergman

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Review Open access Aug 2026

Implications for future pandemics from a living systematic review and critical evaluation of observational studies of the effectiveness of COVID-19 vaccination against the Omicron variant.

Reliable evidence on COVID-19 vaccine effectiveness during the period of Omicron variant predominance was essential to inform global vaccination strategies. Our living systematic review, commissioned by the World Health Organization (WHO), was established to provide an ongoing synthesis and critical appraisal of compar...

Fatema Kazi, Chin Yang Shapland, F. Spiga et al. · 0 citations

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