get ourselves protected and vaccination including boosters is just where we are right now. remember, most vaccines we receive in childhood are multi-shot series. so as a pediatrician, the fact it might turnout to be a three-shot series doesn't surprise me. it is the norm of mostly of our vaccinations. >> my littlest is getting the second shot today. i know that feeling when you finally get your whole family vaccinated. it is just like liberation. doctor, pediatric emergency physician, thank you so much for joining us today. >> my pleasure. thank you. as dr. murray was referring to, pfizer is set to ask the fda to green light its booster shot for 16 and 17-year-olds. the agency is expected to sign off quickly on the request. currently only people 18 and older are eligible for booster shots six months after their second dose of the vaccine. and with this new variant raising so many new questions, anderson cooper and dr. sanjay gupta will be joined by dr. anthony fauci for a all-new