jericka. >> duncan: jessie mitchell, thank you. on july 4, the average number of covid cases was under 12,500. two months later, they jumped to more than 160,000. that's an increase of more than 1000%. cbs's lilia luciano has more from burbank, california. good evening. >> reporter: good evening, jericka. look, even with our high vaccination rates here in l.a. county, health officials are urging people not to let their guard down this labor day weekend. the delta variant is driving hospitalizations nationwide to levels we haven't seen since january. daily deaths jumped 131% just over the last month. >> we have a record number of kentuckians in the hospital battling covid, in the i.c.u. battling for their lives. >> reporter: i.c.u. beds are running outs in georgia, kentucky and hawaii. and these surges come as more kids head back to school on tuesday. already since did start of this academic year, covid shutdowns in 35 states. parents are worried about covid in the classroom. >> all the data that we are collecting right now, does no