FDA permits AstraZeneca to restart U.S. phase 3 Covid-19 vaccine trial: Report

The FDA has permitted AstraZeneca to restart its U.S. phase 3 trial of the vaccine. This comes after the trial was paused globally on September 6th. Since then, trials have restarted in the U.K., Brazil, South Africa, India and Japan. CNBC's Meg Tirrell reports.