pfizer and moderna have submitted ed that seems to suggest that six months after the initial round of vaccination would be the right time to get a booster. that's an update. and also, that there's a consideration of simultaneously authorizing boosters for folks who got j&j as well. i think there's ample evidence that vaccine effectiveness wains over time, certainly less than a year, from six to eight months and boosters can't come soon enough. compromised people, reaching out to folks who are particularly immunocompromised and we're administering those boosters already. >> we've talked about how you handled this inside your own hospital to get your own people vaccinated. you put in a mandate at your hospital. you went from 55% vaccination