The warning is because cases in many states are on the rise...."impending doom" might be a bit aggressive though ...and.....at least in RI the increase in cases are in groups that haven't been given access to vaccine so it might make sense...

Quote
RHODE ISLAND Providence: Public health officials are monitoring a recent rise in coronavirus cases among children ages 10 to 14. The age group now has the third-highest rate of weekly infections, WPRI-TV reports.

Only the 15-18 and 19-24 groups have higher rates, state statistics show.