People are trying to understand this as quickly as possible to form policy. Most of these studies have been in people who were infected first, and then they got vaccination. This hyper infectious delta variant is out pacing our mune responses in some cases. So we're geting a lot of break through infections. And scientists really want to know what what immnity looks like if you’ve been vaccinated and then infected or if you've been infect abetween doses. I'ves just so many questions, and researchers are goingto be answering them,. but that it's always going to be apples to oranges comparisons.