Way too late sadly. I fear that in almost every country it's too little too late.
And no it is still not time to panic.
It is time to take preventative measures if you are higher risk.
On another note my employee's son goes to school on the armed forces base. It's a massive property and includes the hospital where the Italian is in isolation. Imagine they did not put the hotel in isolation BUT all school kids were told to stay home! How ridiculously stupid!