It's The Same Design As The AZ Vaccine.

So it's reasonable to suspect that it's got the same problems as the AstraZeneca vaccine.

Even if it has got a much better team behind it.

https://edition.cnn.com/world/live-news/coronavirus-pandemic-vaccine-updates-04-09-21/h_eaaa1fb29458a3b948b89285e98e7279

The Oxford vaccine was originally intended for single dose use.

The fact it's being used as double dose tells you all you need to know about how badly they screwed it up.