Covid-19 Vaccine Effectiveness against the Omicron (B.1.1.529) Variant.
N Engl J Med. 2022 Apr 21;386(16):1532-1546. doi: 10.1056/NEJMoa2119451. Epub 2022 Mar 2.
N Engl J Med. 2022.
PMID: 35249272
Free PMC article.