Just published: AstraZeneca-Oxford Covid-19 vaccine shows moderate efficacy, but questions remain about the most effective dosing regimen

Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK – The Lancet

Commentaries: Oxford COVID vaccine paper highlights lingering unknowns about results – Nature AND Detailed data on AstraZeneca-Oxford Covid-19 vaccine show it has moderate efficacy – STAT AND Oxford–AstraZeneca COVID-19 vaccine efficacy – The Lancet AND Oxford COVID-19 vaccine is safe and protects against disease, first published results from phase 3 trials – The Lancet AND Expert reaction to a study on the results of phase 3 human trials of the Oxford/AZ COVID-19 vaccine – Science Media Centre