here 2 may 2021
[PM] The Sandman         BS: New news on the pandemic COVID-19 (1953* d)         RE: BS: New news on the pandemic COVID-19         02 May 21

    it is also spread by lack of ventilation in buildings, hospitals, schools, supermarkets, they need to be redesigned too, masks are only part of the solution and are not as important as ventilation, some hopitals need to be redesigned specifically to deal with viruses, regardless of masks.