Vaccine makers have little incentive to recommend dosing intervals different than what they they ran in their studies, but I have yet to see a shred of evidence

Vaccine makers have little incentive to recommend dosing intervals different than what they they ran in their studies, but I have yet to see a shred of evidence indicating that mRNA vaccines lose much effectiveness after 3-4 weeks and some evidence that effectiveness keeps increasing. I wish the US had used the single-dose strategy for anyone under 65 as I think our cases would've started shrinking much earlier than they actually have.