AZD1222 is an investigational vaccine being developed by AstraZeneca to prevent COVID-19, the disease caused by the SARS-CoV-2 virus.
The vaccine is based on a weakened version of a common cold (adenovirus) virus. The adenovirus vaccine has been changed so that it can’t replicate inside your body. It presents part of the COVID-19 spike protein to the body so that an immune response can be made to it. The purpose of the study is to test how well the investigational vaccine works at preventing COVID-19 disease and how safe it is.
Visit ClinicalTrials.gov - NCT04516746 for additional details about the AstraZeneca COVID-19 vaccine clinical study.
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Content last reviewed on April 14, 2021