Another thing about Northern Italy that you won't hear on the news. That area has a big Chinese population. They figured out that if you bring in Chinese laborers but make textiles and leather goods in Italy, you can cut the cost of production but still maintain the market premium of "made in Italy." The laborers are mostly younger folks.
Chinese New Year ended on February 8. The Chinese government completely locked down internal travel after Chinese New Year to try to keep massive outbreaks from occurring in major cities. I work with a lot of companies with supply chains in Asia and we saw a major wave of "force majeure notices" in the 3rd and 4th weeks of February based on the lack of staff at all facilities in major cities in China from the internal lockdown. However, the internal lockdown did not prohibit international travel unless the destination blocked it.
My theory is that a bunch of people in north Italy went back to China and returned to Italy the second week of February. Those people were young and were either asymptomatic or "had a cold" and then the thing started ripping through the native population a few weeks later, where it decimated the old people. The media will just say stuff like "The Chinese population doesn't have any cases" or whatever because (a) the immigrants are typically younger laborers who probably weren't hard hit and were healthy by the time the tests hit the ground and (b) they are in the pockets of the ChiComms. Pretty much every condensed pocket of this that hit Japan in early waves was traced back to a specific person traveling from China and they aren't bashful about mentioning that on their news.