“The Green Pass effect is impressive: it is allowing us to identify the unvaccinated infected.” So Roberto Battiston, professor of physics at the University of Trento, looks at the graph he has just drawn on the computer: it is the curve of new daily cases. A trend that starting from last week has begun to show anomalous behavior, with infections increasing. “This trawling – Battiston explains to ‘Repubblica’ – is intercepting a number of infected that otherwise would continue to infect. It is very important, because it objectively measures the presence of the epidemic in the unvaccinated population, defends the workplace from insertion of contagious people, significantly reduces the epidemic in the country, because for the first time it makes a systematic tracking, not connected to tracing “.
Professor Battiston, what’s going on? “We are seeing a side effect of the Green Pass requirement, a very positive effect, but one that hasn’t been thought through enough,” he replies. We had talked about an autumn 2021 characterized by the decline in infections due to the vaccination campaign. Does this upward recovery change the scenario? “Absolutely not – specifies Battiston – It is true that the decline, due to vaccines, is fading a bit, temporarily, precisely because of this phenomenon, but in reality the rise is good news: it helps us to identify in the overall population, especially among the unvaccinated, people who are ‘dangerous’ because they are contagious. We count them as extra cases, but at the same time we remove them from the contagion circuit. Even if for a few days the number of new positives will increase, it will be very large the overall benefit in particular for the non-vaccinated population, where today most of the contagion occurs and where we record most of the serious outcomes “.
“And a sweep test, as was done in South Tyrol with the antigen test for 350 thousand people: in the following days all the parameters of the epidemic collapsed, because the few thousand positives that would have continued to be unaware of being quarantined were quarantined. without that operation and to spread the virus “, concludes Battiston.
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