The people running the American trials and approval process for AZ are clowns, and, if there weren't an ongoing pandemic related to the vaccine, their application should be rejected on that basis alone.
In the US, everything has been delayed by their incompetence so we've been sitting on millions of doses of the AZ vaccine waiting for them to complete their trials and to apply for emergency use authorization. If they had completed their trials and application competently, those doses could've been used by now.
To be fair, they can’t hurry the finish of a trial. Once the FDA asked them for more data they were stuck waiting for a certain number of events before they could analyse the data.
I’ve heard some people suggest that Oxford was the problem. They did all the early work in their first phase 3’s which turned out to be a shambles (not enough elderly, inconsistent dose, inconsistent dose interval) but AZ were involved by the time these US studies were set up, which have been much better designed and run.
Where AZ have shat the bed is with their communications. Press releases full of misleading claims, poorly explained and communicated supply issues etc
Anyway, I’m still convinced it’s a good vaccine. With solid evidence that it’s doing what it’s supposed to do in real life clinical practice. But yeah, hard not to wonder how this all worked out in a parallel universe where Hancock didn’t block the Merck partnership. Merck have loads of experience developing vaccines. AZ have none and it shows.