Categories Articles Oxford University and AstraZeneca vaccine trial shows up to 90 percent effectiveness Post author By crystalg Post date November 23, 2020 The Verge – All Posts Tags AstraZeneca, Effectiveness, Oxford, Percent, shows, Trial, University, Vaccine ← AstraZeneca COVID-19 Vaccine Up to 90% Effective, Late-Stage Trials Show → Two-step menu for effective feedback: Sandwich and Wrap