asymptomatic people to five days followed by five days of masking. but the guidance making no mention of a test before leaving isolation. i actually think it would help a lot to ask people to get a negative test, as well. it would actually make a big difference, so i don t know why the cdc did not put that in. i suspect it might be because tests are still hard to come by and that may make it even harder. reporter: but new york city plans to make testing the center of a new plan to keep more students in the classroom. this is how we re going to look at schools from this point on. keep them safe. and keep them open. reporter: the country s largest school system will no longer quarantine entire classrooms exposed to covid. instead, they ll ramp up testing after a positive case. students who are asymptomatic and test negative with an at-home kit can stay in school. this new variant is affecting variants.more than the past - reporter: it comes as covid cases in children are soar
the anniversary of january 6th, the president laid blame for the insurrection at donald trump s feet. the new york times described the overall aggressive posture of the speech as a shift in the administration s approach. do you agree, and if it is, will it make a difference? alicia, it s better i don t talk about ted cruz. it s a family program and that was a humiliating program last night. i might have liked it a little took them so we ll leave that there. as far as joe biden is concerned, i do think it was a slight pivot. and i think it was a good pivot. this is the deal. for one year joe biden has been so prudent and so reserved when it comes to the former president, a former president that tried to stay in power against the will of the people and sicced a mob against him at the capitol. joe biden has done everything he can to issue an olive branch to the right, working with them on immigration and the covid relief bill and he has no credit from a lot of the folks in the
right in there. you are all set. reporter: from virginia to new jersey, miami to philadelphia, americans spending this holiday week waiting hours for covid tests. it s crazy. i can t even go to my neighborhood drugstore. and then coming here, well, we just got shut down, saying they re not taking anymore people. reporter: tonight, soaring demand for tests and a backlog of holiday reporting have driven covid cases to 440,000, the highest one-day total ever. but a true snapshot of the winter surge won t be known until after new years. still, hospitals under strain are warning it will only get worse. we have no beds. we re holding patients in the e.r. for multiple hours, if not days, multiple days. reporter: and tonight, new clues about omicron. a cdc report suggests the incubation period may be as little as three days, as compared to four for delta and at least five days for the original strain. just yesterday, the cdc shortened the recommended isolation period for
ilung police investigating seven different crime scenes from denver to lakewood. authorities today identifying the suspect, saying he was nobody to law enforcement and harbored extremist views. news tonight about the 14-year-old girl accidentally shot and killed by police in los angeles. her mother in tears, describing her daughter dying in her arms. authorities releasing body camera video. officers opening fire on a suspect inside a store, not knowing the girl and her mother were in the dressing room nearby. america s travel nightmare continues. roughly 1,100 flights canceled today. pilots, flight attendants and other essential staff testing positive for covid, forcing airlines to keep their planes on the ground. two people killed in an avalanche in montana. heavy mountain snow slamming the west. why authorities are now urging drivers to avoid using navigation apps in some areas. and the winter blast from the great lakes into the northeast. rob marciano timing it all out.
to your party. reporter: and more broadway shows are going dark. just days ago, actor hugh jackman paid tribute to broadway s understudies after covid sidelined his costar. found out at 12:00 noon today and at 1:00, she had her very first rehearsal as marian paroo. reporter: tonight, the music man canceling performances after hugh jackman revealed he, too, has mild symptoms from covid. so many shows and events impacted by this surge. victor oquendo is back with us from miami. and victor, the cdc tonight is updating its estimate of omicron cases in the u.s. reporter: whit, that s right. the cdc now estimates omicron makes up nearly 59% of all new cases. that is lower than last week s initial estimate of 73%. still, omicron is the dominant strain and the cdc says cases are steadily increasing. also new tonight, the fda says that rapid antigen test works,