department staff without testing as an alternative in the city's largest in the nation public school system. at the same time, though, for all the proven benefits of vaccination, some people are still choosing, instead, to risk their lives on quack remedies. department of health today repeated its warning not to ingest the livestrock drug. two reports of individuals hospitalized with potential poisoning toxicity. and consult their doctor, if infected. for more now on the difference and lives saved, today's decision could make, we are joined by dr. anthony fauci. director of the national institutes for allergy and infectious diseases and the president's chief-medical adviser. so dr. fauci, i want to get to the fda approval, in a moment. first, i do want to ask you something that you -- that you said to npr today. you said if the majority of americans get vaccinated, quote, we could start to really get some good control over this as we get back into the fall of 2022, a year from now. is that the best-case scenario? and what does control look like? >> no.