>> reporter: good evening. new york is now believed to be the first city to require vaccines for all workers and now children here as young as 5 must be vaccinated before any indoor dining or entertainment. the new york mayor today called his mandate requiring all private workers be fully vaccinated a preemptive strike against the cold weather and the few omicron variant. >> look, this is how we put health and safety first, by ensuring that there is a vaccine mandate that reaches everyone universally in the private sector. >> reporter: the mandate will affect 184,000 businesses but not apply to people working from home and there will be no testing alternative. early data shows the new omicron variant produces mild symptoms at worst. in fact, it is believed to be the delta variant driving a new wave of cases across the u.s., averaging more than is hundred thousand a day, with an increase in hospitalizations as well. with much about omicron still