isolation and quarantine. as we are learning with covid, they denote two different things. on the israeli plan to gave fourth vaccine dose to certain groups, i was interested to hear what dr. anthony fauci had to say about that in a radio interview. let me play this for you. if the protection is much more durable than the two-dose, nonboosted group, and we may go a significant period of time without requiring a fourth dose. so i do think it s premature, at least on the part of the united states, to be talking about a fourth dose. you know, moderna s chief medical officer was on with wolf yesterday, and he seemed to agree with what fauci is saying. what do you think of a fourth dose? yeah, i agree with dr. fauci that it s premature at this time for us in the u.s., especially because we have such a substantial proportion of the population that still hasn t received their third dose of the booster, which really is essential at this time.