Researchers are trying to understand what is it about hyberd immunity so you can safely mimic it and get the benefits. Some studies have found that natural infection elicits more breadth of anna bodies, a recognized, more diverse regions of sars cove too. The real question is, what is mediating this potency and this breadth that we see? Is it just time? You know, iu's a lot of people that researchers have studied, they got infected in the first wave.