With regards to The Vax'ers vs The Vitamin D'ers... If nothing else this study / paper does raise the question: What was the Vitamin D "status" of those who to

With regards to The Vax'ers vs The Vitamin D'ers... If nothing else this study / paper does raise the question: What was the Vitamin D "status" of those who took part in the vax trials? That is, perhaps the vax is effective, but as dependant on Vit D levels? Lower D? Less effective vax?? Yeah, hard to study, but given all the sociopolitical implications, certainly someone should make the effort?