The shift towards delta becoming the dominant variant that we're seeing in transmission reminds me of a shift we saw with the alpha variant quite some time ago. So on that note, i guess i want to start with vaccination. Like, what are the studies saying about delta and vaccines? R, you're right. One of the big questions people are asking is, in light of vaccination programmes. Here in the k for example, quite a big proportion of adults are now vaccinated against covet,Delta is dominant. Public health officials really want to know how well does vaccinating people work against delta as compared to other variants. It's kind of not looking good.