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Contact tracing apps in Italy won’t work if no one downloads them

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Analysis. Contact tracing apps that use the DP-3T algorithm are private. But experts wonder if they’re even useful, since they are only effective if at least 60% of the population voluntarily install them.

written by Andrea Capocci

Topic Italy

May 28, 2020

On Monday there were 92 dead and 300 new positive cases of COVID-19 throughout Italy. In Lombardy, where there were 34 deaths recorded; no official correction has arrived after the surprising (and somewhat suspicious) “zero deaths” on Sunday.

Most importantly, the low number of swabs carried out in Lombardy raises doubts: 5,641 tests were carried out Monday, revealing 148 new cases. In Veneto 7,470 were performed, only 11 of which were positive. With 2.6%, Lombardy has by far the highest ratio of new positives to tests performed: the national average is 0.8%. This means that in Lombardy, contact tracing operations, i.e. the search (and testing) of people at risk of infection, are proceeding slowly.

It is hoped—but no one is really convinced—that the “Immuni” app will speed this up. According to the intentions of the........

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