Everything I’ve seen indicates this virus is not particularly dangerous to young people including the very young.
Yes, in fact the Chinese numbers were quite dramatic (looking at 10s of thousands of infected individuals). Kids 0-9 were the least frequently infected and they have no reported fatalities - pretty remarkable given the size of the patient cohort. There were also relatively few infected from ages 10-20, and a very low death rate.
Infection frequencies pick up for 21 and older substantially. Death rates start to trend up at age 50. For the 10-49 age group, it seemed to be as dangerous as a normal season of flu.
Don't get me wrong. Otherwise healthy 30 year olds are still dying of the infection, which is new for a fast spreading coronavirus (the original SARS didn't spread as easily as this one).