That's not the reason. Follow the thread.The Italian government has implied that the large number of cases is because of far more widespread testing in Italy. PM Conte said: “We've already done 4,000 swab checks. We are the first country in Europe that has decided on stricter and more accurate controls”.— Miles Johnson (FT) (@MilesMJohnson) February 24, 2020
Here's his FT coverage, we linked to one of his stories in yesterday's "These Coronavirus Headlines Are Not Very Encouraging":