I don't think that's the main issue. I think it's that the general assumption is that Moderna vaccine is about 90% effective and AstraZeneca about 60% effective.
I don't know how well you can actually compare these 2 numbers and if those are even the most important numbers, but that's part of the problem: Most people only look at these numbers and that's why they would prefer the Moderna vaccine.
I don't know how well you can actually compare these 2 numbers and if those are even the most important numbers, but that's part of the problem: Most people only look at these numbers and that's why they would prefer the Moderna vaccine.