We have not seen better and more successful studies for ivermectin, we have seen a lot of studies that find it does next to nothing, and a few deeply fraudulent studies that finds that it solves world hunger.

It's a strange day when people argue against evaluating a new medicine, in favour of snake oil that doesn't work.

Given that you think that it's unclear that vaccines reduce the rate and seriousness of COVID, I am not sure that your have a good enough understanding of the ground facts to have an informed opinion on this subject.