Lifting Universal Masking in Schools - Covid-19 Incidence among Students and Staff.
Tori L CowgerEleanor J MurrayJaylen ClarkeMary T BassettBisola O OjikutuSarimer M SánchezNatalia LinosKathryn T HallPublished in: The New England journal of medicine (2022)
Among school districts in the greater Boston area, the lifting of masking requirements was associated with an additional 44.9 Covid-19 cases per 1000 students and staff during the 15 weeks after the statewide masking policy was rescinded.