pfizer or vice versa. that is possible. so the bottom line here is that for anyone who is fully vaccinated and enough time has passed, say five months, six months, seven months, eight months somewhere in there, you could get a booster in the coming weeks or months. it will most likely be offered and available to you, not the week of september 20th. but it will happen. let's take a listen to dr. fauci. >> pfizer one of the companies with the mrna has gotten the information has been examined and things look like they're ready to go. moderna might be behind that and if they are what you might see is rather than the simultaneous rolling out of the booster program of both dose products, you may be sec -- sequential.