How this for a strawman…
UK approves AZ vaccine ahead of everyone else and starts to roll it (and well done too). AZ starts shipping to the UK and then the States. So both these countries have received a portion of their Q1 planned deliveries already. Then production problems hit and projected Q1 volumes are reduced. Do you reduce the number of vaccines shipped to each country proportionally from now or from the first shipment date?
That might even be a very benign interpretation of what’s happened. For example if deliveries have been accelerated to the UK because they’re using them (once again, very well done) and they have projected everyone vaccinated by autumn based on these current volumes. Sharing the total Q1 output proportionally would mean a very significant reduction in future UK shipments.
I was just watching a Guardian Live discussion with Donald Tusk. At one stage he was saying that sadly the blame game between the EU and the UK was still going on. He cited a few examples and “vaccines" was one! I didn’t know there was any discord between the EU and UK over vaccines.
This above may all be just the ramblings of my over quarantined mind or the impact of 5G on my thought processes but I think that unless this is resolved quickly, like on the AZ call tomorrow, it could get messy.