The virus is going to be what people call endemic, which means it's going to keep circulating. Over the course of someone's lifetime, they should expect to have multiple sars kove two infections. The most surprising thing we found was that people can get covid over and over again, even as much as four times. We do not know how long immunity lasts. In some cases it might be 90 days in some cases it may be 60 days. And if we're lucky, this continues to get less severe, yes.