The coronavirus was present in two large Italian cities in December, more than two months before the first case was detected, a national health institute study
and the first in the world to impose a nationwide lockdown. The first known case, other than a couple of visiting Chinese tourists, was a patient in the town of Codogno in the Lombardy region.
By early March it had extended the shutdown across the country and has now recorded more than 34,500 deaths. The results, confirmed in two different laboratories by two different methods, showed the presence of SARS-CoV-2 in samples taken in Milan and Turin onSamples from October and November 2019 were negative, showing theThe data was in line with results obtained from retrospective analysis of samples of patients hospitalised in France, which found positive SARS-CoV-2 cases dating back to the end ofIt also pointed to a recent Spanish study that found genetic traces in waste water samples collected...
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