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The result of a new study highlights a non-decisive role of the school in the contagion of the second wave of the covid
Is school a safe place, yes or no? It is, literally, one of the leitmotifs that has accompanied us practically every day since September. If on the one hand the words of the Minister and the Government tend to reassure from the institutional point of view, on the other hand there are studies that investigate the contagion and covid situation in schools.
A new study by a group of researchers crossed data from the Ministry of Education, databases, Higher Institute of Health and regional data from September 14 to November 7 on 97% of Italian schools, or 7.3 million students and 770 thousand teachers. . And the result that emerged highlights a non-decisive role of the school in the contagion of the second wave of covid.
Therefore, a study opposes the one carried out by a working group of academics in Reggio Emilia, published in recent days, in Eurosurveillance, a European sector magazine, which instead identifies Italian high school students as strongly involved in the infection.
As reported by the Corriere della Sera, research shows thatThe incidence of positives among students is lower than that of the general population.: if the average is 108 out of 10 thousand, in thefirst grade primary and secondary schools It was from 66 out of 10 thousand, while in secondary schools it is 98 out of 10 thousand.
New positives, low numbers compared to the average for freshmen
Therefore, it is observed that at the lowest levels of education, in fact, the incidence of new positives was on average less than 38.9% compared to the rest of the population in all regions (except Lazio) while in the case of secondary school it was “only” from 9%, except in three regions (Lazio, Marche and Emilia Romagna).
Regarding school personnel, the incidence was between teachers and non-teachers twice that observed in the general population (about 220 out of 10,000) because the the number of swabs performed is very high.
In fact, the number of tests per institution per week ranged on average from 7 in kindergarten to 18 in high school, with several schools getting better results 100 proof in a week when tracking.
Few outbreaks in schools
The study also reports other data, for example i sprouts that were created in schools in the period between November 23 and December 5 among students and teachers of kindergartens, primary and lower secondary: before a high number of test performed every week, the outbreaks were less than 7% of the 13 thousand schools analyzed in the two weeks, a sample of almost a million students. In fact, less than 1% of all swabs done after a positive at school tested positive.
Rt index on the rise: schools have nothing to do with it
Did the schools, when they reopened, contribute to the increase in the Rt index? According to the study, no: the increases in the Rt index are not linked to the opening of schools, on the contrary: in some regions where schools opened earlier, RT increased later than in regions where schools opened later, and vice versa.
The research was conducted by Sara gandini, epidemiologist and biostatistician at the European Institute of Oncology in Milan, Luca scorrano, physician, former scientific director of the Venetian Institute of Molecular Medicine, Senior Lecturer in Biochemistry at the University of Padua and Francesco Cecconi, Senior Lecturer and Cell Biologist at the University of Rome and Copenhagen, both members of EMBO. In the research team there are also Maria Luisa Iannuzzo, forensic doctor of the Prevention Department Aulss9 Scaligera e Maurizio Rainisio, biostatistician with more than 40 years of experience in pharmaceutical companies.
Covid infections, Brusaferro (ISS): “At school they are no longer in other contexts”
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