Lifting Universal Masking in Schools - Covid-19 Incidence among Students and Staff.
N Engl J Med. 2022 Nov 24;387(21):1935-1946. doi: 10.1056/NEJMoa2211029. Epub 2022 Nov 9.
N Engl J Med. 2022.
PMID: 36351262
Free PMC article.