I remember back before they knew what would be available, someone posed the question of what if the first vaccine approved was partially effective and later a better one was developed. The answer was that you could also get the ‘new’ vaccine without any problems( I guess like the original shingle shot and the newer Shingrex). So I imagine that after the first round is done someone might be able to get a different brand on top of what they got at first.
I remember back before they knew what would be available, someone posed the question of what if the first vaccine approved was partially effective and later a better one was developed. The answer was that you could also get the ‘new’ vaccine without any problems( I guess like the original shingle shot and the newer Shingrex). So I imagine that after the first round is done someone might be able to get a different brand on top of what they got at first.