and got one, maybe even off the books before it had actually been put in stone by the fda and the cdc. should the people who got a third dose of the moderna vaccine have anything to worry about right now, or what would you say to those people? >> i certainly know a lot of folks in and outside of the healthcare field who have gone out and gotten their third shot whether or not they're immunocompromised they're saying that they are. they're not having any adverse effects or safety effects. the one thing that i will say to people that are thinking about getting a third dose before fda approval is please wait at least six months after you finished your primary series of immunization. there is preliminary data suggesting that that six-month period is essential for the booster to have full effect in terms of increasing your body's natural ability to fight off this virus. so if you can hold off a little more, please do. and in the meantime, remember, masks and outdoor distancing or ventilation also work probably just as well as a booster to