Media type: E-Article Title: Effectiveness of Ad26.COV2.S and BNT162b2 Vaccines against Omicron Variant in South Africa Contributor: Gray, Glenda; Collie, Shirley; Goga, Ameena; Garrett, Nigel; Champion, Jared; Seocharan, Ishen; Bamford, Lesley; Moultrie, Harry; Bekker, Linda-Gail Published: Massachusetts Medical Society, 2022 Published in: New England Journal of Medicine, 386 (2022) 23, Seite 2243-2245 Language: English DOI: 10.1056/nejmc2202061 ISSN: 0028-4793; 1533-4406 Origination: Footnote: Access State: Open Access