djokovic as the tennis star waits to see if he'll be allowed to defend his grand slam title. a live report from sydney with the latest. and we're live at the cnn weather center where millions across the u.s. are under another winter weather advisory. we begin in the u.s. where the rampant spread of the omicron variant is hurting health care and education. a record number of young children are in hospitals, infected with the coronavirus. and the numbers you see there represent the number of kids under the age of 5 per 100,000 who are hospitalized. and with medical workers scrambling to deal with new admissions of all ages, the omicron variant is disrupting the delivery of routine health care. meanwhile, while the surge in