is requiring healthcare workers to get boosted with no testing option. >> reporter: los angeles just hit a pandemic record of new daily covid cases, and now california is joining at least 23 other states in activating the national guard to help. many hospitals across the nation are canceling surgeries that are not emergencies. and starting today, new york hospitals, 40 in total, 40 total new york hospitals, are having to push nonessential procedures for at least two weeks. irika. >> sargent: lilia luciano in los angeles tonight, thank you. now here in chicago, a bitter standoff over covid safety concerns between chicago public schools and its teachers' union. after three days of canceled classes for one of the nation's largest school districts, tonight, no deal or even a timeline for students to get back to class. we turn to cbs' charlie de mar. >> reporter: two days after chicago public school students