I'm also beginning to wonder about the true motivations behind Australia, Denmark, and other places refusing AZ.
Clearly an extremely rare side effect when you get extremely rare side effects with any drug and vaccine isn't a sensible reason.
I wonder whether it's because AZ, whilst good, isn't as effective as Pfizer and Moderna. A goal of real herd immunity and zero or close enough covid is more realistically achieved.
AZ is only around 62% effective (the higher rates of 70% were associated with the half dosing regime, which we didn't adopt). Pfizer and Moderna, especially if given on the 3 week schedule, are over 90% effective. We can see how well things are going in Israel, with the majority vaccinated (on Pfizer with 3 week gap).
Our vaccine programme is being used alongside a government approach that accepts 50,000 additional deaths (and more long covid). That's not going to be the same everywhere in the world.