US trial of #AstraZenaca #COVID19 vaccine shows it is safe & 79% effective overall.
The result is a boost for the troubled vaccine, which had its rollout paused across Europe last week after reports of rare but worrying blood clots.
https://www.washingtonpost.com/world/europe/astrazeneca-vaccine-trial-efficacy/2021/03/22/fc950a22-8aa6-11eb-a33e-da28941cb9ac_story.html