Director with assurances today that the city is prepared for this new variant, despite being the home to the only known, so far, usip should. but medical experts concede a lot is still unknown about the threat here. and to walk us through it all, we welcome back dr. nahid bhadelia, an infectious disease physician. founding director of boston university center for emerging infectious diseases policy and research. doctor, so glad to have you. i'm afraid i'm going to launch a very broad question year we. what questions do we still need answers to considering it is so young in the lifespan of this...