Astra zenica have issued a further rebuttal. From the guardian.
A spokesperson for AstraZeneca said: “Each supply chain was developed with input and investment from specific countries or international organisations based on the supply agreements, including our agreement with the
European commission.
“As each supply chain has been set up to meet the needs of a specific agreement, the vaccine produced from any supply chain is dedicated to the relevant countries or regions and makes use of local manufacturing wherever possible.”