> Overselling their production capacity by a lot, for one.
They grow live virus in live cell cultures. Scaling bioreactors from 50 liter test reactors to 1000 or 2000 liter production size reactors can be tricky. Even when everything goes well, bioreactors can have 3-fold differences in yield.
I would assume either AZ quoted the ideal production capacity. Or maybe AZ quoted a range, and EU politicians took the maximum of the range and believed that would be achievable.
They grow live virus in live cell cultures. Scaling bioreactors from 50 liter test reactors to 1000 or 2000 liter production size reactors can be tricky. Even when everything goes well, bioreactors can have 3-fold differences in yield.
I would assume either AZ quoted the ideal production capacity. Or maybe AZ quoted a range, and EU politicians took the maximum of the range and believed that would be achievable.