[_wwz4]

If it's a social construct, then it can't have a biological impact on the efficacy of a vaccine.

You see the paradox?

[RaptorJ]

Why not? Money is a social contruct, but dollars to donuts, populations with less of it will have lower vaccine efficacy.

[crusso]

You're right. That would be a counter-example because of non-biological second-order effects.

But in this context, we're talking about first-order biological effects that aren't accounted for because of race. If race doesn't have biological underpinnings then the larger argument is meaningless.