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The problem
Intervention: SARS-CoV-2 vaccination with two doses
Who it was tested with: Children and adolescents.
Experience from people who deliver programmes: stories, case studies and lessons learned. Valuable for understanding how and why, and for spotting what to test next, but not a measure of effect.
"We systematically searched PubMed, Embase, and Web of Science from inception to 5 January 2022. RCTs and observational studies that examined the effectiveness and safety were included." This meta-analysis synthesizes evidence from multiple experimental and observational studies to assess vaccine effectiveness, representing the highest tier of evidence available for this intervention.
Wide confidence intervals on some estimates indicate heterogeneity across studies. Analysis limited to studies published by January 2022. No stratification by vaccine type or age group reported.
Across countries and designs
4 studies · 3 countries
