Heard on NPR that there is some controversy over AZ's 'transparency' of their trials.Here in Germany and in some other EU states the AstraZeneca vaccine has caused troubles with blood clotting and deadly thrombosis in the brain for mostly women.
They discovered 16 cases so far in less than one week here in Germany.
So I would not recommend this vaccine for women.
this article is dated 03.19.2021 and they have discovered many more since.
https://www.dw.com/en/astrazeneca-german-team-discovers-thrombosis-trigger/a-56925550