we re also following the aspects of this pandemic and the fallout from it. big news in chicago. the teachers union and the school district there reaching a tentative deal to get kids back into the class after a fight over covid safety protocols left students and families stranded. cnn s elizabeth cohen is standing by for us watching the senate hearing with the nation s fop health officials. let s start there. elizabeth, what have you heard so far? kate, they ve just had the opening statement, they re now beginning the questioning. and what we heard was the cdc director dr. rochelle walensky doubling down on the cdc s advice that if you have covid, and you re feeling better, or you re asymptomatic, that after five days, you can get out of isolation, even if you don t test, dr. walensky says look, a part of our point of public health here is to get essential workers including hospital and health care workers back to work. so she doubled down on that. we also heard dr. fauci talk about