"Adjusting for county-level incidence, COVID-19 incidence was 37% lower in schools that required teachers and staff members to use masks, and 39% lower in schools that improved ventilation, compared with schools that did not use these prevention strategies." https://t.co/JovCLjKeFj
— zeynep tufekci (@zeynep) May 21, 2021
Stop pretending everything’s okay now
