Protective effectiveness of previous SARS-CoV-2 infection and hybrid immunity against the omicron variant and severe disease: a systematic review and meta-regression

The Lancet infectious diseases, 2023-05, Vol.23 (5), p.556-567 [Peer Reviewed Journal]

2023 World Health Organization ;2023 World Health Organization; licensee Elsevier. This is an Open Access article published under the CC BY 3.0 IGO license which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In any use of this article, there should be no suggestion that WHO endorses any specific organisation, products or services. The use of the WHO logo is not permitted. This notice should be preserved along with the article's original URL. ;2023 World Health Organization 2023 ;ISSN: 1473-3099 ;EISSN: 1474-4457 ;DOI: 10.1016/S1473-3099(22)00801-5 ;PMID: 36681084

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