AstraZeneca has published latest data after a surprisingly public rebuke from US authorities. Overall efficacy reduces from 79% to 76% while efficacy in the over 65s improves from 80% to 85%. So hardly worth all the fuss. At either the higher or the lower figures, the Oxford-AstraZeneca vaccine is highly effective.
You have to wonder what the real problem is here. What have Americans and so many Europeans got against a safe, highly effective and easily distributed vaccine being available to the world at cost?
https://www.bbc.co.uk/news/world-us-canada-56521166