concept holds true. it should because it holds true for so many different vaccines. >> oh, i see what you are saying. the dependent variable is the antibody level as opposed to illness, hospitalization or fatality. >> exactly, exactly. >> that's the thing they're measuring, that's the thing they're going to go to the fda on, that's the thing that the dataset is going to talk about? >> that's right. what they're saying is, you know, this level of antibody was seen in adults. adults were protected at that level of antibody. >> right. >> with this amount of -- with this one-third of a dose of vaccine we get the same level of antibodies. >> gotcha. >> that should protect children. it should give parents some comfort that their children are getting as little of this material as is needed to give them a level that should be protective >> all right. dr. richard besser, that was very informative. i appreciate it. thank you. . >> my pleasure. still to come, the skyrocketing number of threats against members of congress including a video of a man stalking a congresswoman while armed with a gun. why threats are on pace to double from last year after this.