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This document summarizes information about 6 COVID-19 vaccines currently in development or approved, including their developers, technology, clinical trial phases, efficacy, and reported adverse effects. The vaccines discussed are the Pfizer/BioNTech, Sinopharm, Sputnik V, Moderna, AstraZeneca/Oxford, and Bharat Biotech vaccines. Common adverse effects across vaccines include pain at the injection site, fever, headache, and fatigue. Reported adverse events have generally been mild or moderate in severity. Clinical trial results have shown efficacy rates ranging from 62-95% depending on the specific vaccine and dosing.














