I wish I knew - but speculating... it might be that O/AZ is the one that gets used (if the results are any good) because there are 100m doses already made and a

I wish I knew - but speculating... it might be that O/AZ is the one that gets used (if the results are any good) because there are 100m doses already made and available and it requires only normal refrigeration so should be easier to actually get out there. I really hope that they get some good results...