Hi William, I really appreciate your highly thoughtful comment. You have helped me look at this matter from a new perspective - that the risk profile of mRNA vaccine can still change in the future and may not always be less than SARS-CoV-2 infection, among other things.

Thanks for the links too that I've not seen previously. The Nature study, in particular, is very insightful, finding that immune reactions toward vaccination may aggravate certain medical conditions. This study, as well as the other points you have raised, are definitely something I must keep in mind about. Once again, I really appreciate your comment.