Yup you're right, sorry, I misunderstood the figures in a chart being presented for the EuroMOMO, monitoring of excess mortality. It still shows that no emergency situation was declared despite the mortality being greater in previous years of this seasonal period.
You can stay home, and just go out for groceries and work, that's how I live normally. No need to shut down businesses. The ones that should be isolated are the vulnerable. Italy has a high level of smokers and elderly in regions affected. Of course, like with getting sick of anything, you should stay home and not go get other people sick. Many people don't respect this common courtesy at all times, which they should. People should be more responsible to avoid spreading their sickness, because they can easily avoid doing that.