positive for covid. in times square, the crossroads of the world, long lines to get tested as the rapidly spreading omicron variant grips new york city. 92% of cases in the area are connected to omicron, and the city is testing more than 130,000 people each day, double the number from just three weeks ago. today, mayor bill de blasio announcing a reward for booster shots. >> get your booster shot. get $100 incentive. >> reporter: and there's rampant covid testing in chicago where mayor lori lightfoot said proof of vaccine requirements for restaurants, gyms, and entertainment venues. >> this is what we have to do to keep our health system from becoming overwhelmed. >> reporter: and tonight, the c.d.c. reporteds more than 1,000 children have now died from covid since the beginning of the pandemic. research shows that the risk of household transmission is nearly three times higher for omicron than the delta variant. one in five hospitals nationwide expects a staffing shortage