I think they’re hoping the AZ vaccine will be the mainstay of the really big vaccine ramp-up. When we use community vaccination centres to reach most of the population.
Either AZ
or the J&J one, which only needs one shot and doesn’t need the same very cold storage as mRNA vaccines. We’re still waiting for results though.
Although I’m sure the Moderna/Pfizer vaccines will be ramped up regardless. Basically every licensed, effective vaccine will be used as much as possible. Choice will be dictated primarily by supply.