The rising line is cumulative cases. Look ast the first two weeks, we had 20,000 cases. That means of the total accumulated cases, about 1/4 of them are now immune, they have a seasonal vaccine, natural born. In another week another 20k will be immune, and these are selected cases, cases with severe stress. There is likely another 20k who got mild symptoms but never made the connection, and our now immune. Immunity is doubling along with the virus, and immunity last longer than incubation which Italy can keep down to one week.
The region thus generating immunity much longer than infections; the outbreak will move on for the year.
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