There wasn't really that much data or research findings about this. In a pre pandemic state, i guess no one was really massively looking at this issue before. Now it's suddenly whatever one onee answers about. There is a group in barcelona who did a trial at a night club. And there's also a biggr sort of project in the netherlands which recently has been quite battered er by covid. It lifted all its restrictions in late june in a similar way to what the uk. Has done recently. But within a few weeks, the dutch prime minister had to apologize and actually bring restrictions back in because the case accounts sored so highly.