US CDC: “Improving ventilation in the classroom reduces Covid infection among students”

Improving the ventilation, even with the use of air filtration systems, of classrooms reduces the transmission of SARS-CoV-2 in the student community. This is confirmed by the American Centers for disease control and prevention (CDC) who monitored, between February and March, a sample of public schools, and the relative transport for students, where resources were invested to renew the ventilation systems also with last generation. The study conducted by the CDC experts involved 420 schools, in urban and rural areas, and 11 strategies for ventilation in schools and on school transport were taken into consideration. The four most frequent were: the relocation of various outdoor activities; inspection and control of ventilation and air conditioning systems existing before the pandemic; keep doors and windows open when you can. Then, in some complexes, portable Hepa (High Efficency Particulate Air) filtration systems were used in the classroom and in the spaces where the students eat; then other schools also used ventilators. “Securing resources for improved ventilation could reduce the transmission of Sars-CoV-2 in schools, prevent the transmission of other infectious diseases, and lead to improvements in the health of students and school staff.” , conclude the American experts. “We have a few months ahead of us to secure schools with aeration and mechanical ventilation systems which, as I have been saying for two years and as a Spallanzani-Sapienza study has also certified, are three times more effective than masks in protecting against infection. from Sars-CoV-2. We must now be industrious ants to guarantee a more peaceful autumn. In fact, it is time to say enough to children with masks: it is a show that we no longer want to see “. This is how Francesco Vaia, director of Inmi Spallanzani in Rome, comments on the report of the American Centers for Disease Control and Prevention (CDC) at Adnkronos Salute. Vaia was the first to indicate one of the strategies to return to normality in securing social places. So modern ventilation systems also “in cinemas, theaters, on public transport, Italians – observes the director – will be happy to allocate a few points of GDP to this operation so as not to go back to the mistakes already made in the past”.