vaccinated are often under-vaccinated. i think it's going to be really important that everyone follow through, get your booster if you're eligible and if you've been infected and recovered the level of protective immunity is highly variable and you can smooth had that out and ensure protection by getting vaccinated on top of being infected and recovered. this delta variant that i'm worried about, that really hammered our state of texas over the summer and then across the south, i'm worried we're starting to see the beginning of that winter wave in the upper midwest. we have a lot to worry about from the existing delta variant. arthel: 30 seconds before we go, doctor. you've got a lot of people who he remain vaccine hesitant or they're simply saying i'm not going the to get it, so what if i get covid, i'm going to survive it. what do you say to those people? >> what i say is we're about to reach 800,000 americans who have lost their lives and i'm really glad you asked the question because here is the real numbers. since june 1, arthel, 150,000