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Protection against omicron (B.1.1.529) BA.2 reinfection conferred by primary omicron BA.1 or pre-omicron SARS-CoV-2 infection among health-care workers with and without mRNA vaccination: a test-negative case-control study.
Carazo S, Skowronski DM, Brisson M, Barkati S, Sauvageau C, Brousseau N, Gilca R, Fafard J, Talbot D, Ouakki M, Gilca V, Carignan A, Deceuninck G, De Wals P, De Serres G. Carazo S, et al. Lancet Infect Dis. 2023 Jan;23(1):45-55. doi: 10.1016/S1473-3099(22)00578-3. Epub 2022 Sep 21. Lancet Infect Dis. 2023. PMID: 36152671 Free PMC article.
Protective effectiveness of previous SARS-CoV-2 infection and hybrid immunity against the omicron variant and severe disease: a systematic review and meta-regression.
Bobrovitz N, Ware H, Ma X, Li Z, Hosseini R, Cao C, Selemon A, Whelan M, Premji Z, Issa H, Cheng B, Abu Raddad LJ, Buckeridge DL, Van Kerkhove MD, Piechotta V, Higdon MM, Wilder-Smith A, Bergeri I, Feikin DR, Arora RK, Patel MK, Subissi L. Bobrovitz N, et al. Lancet Infect Dis. 2023 May;23(5):556-567. doi: 10.1016/S1473-3099(22)00801-5. Epub 2023 Jan 18. Lancet Infect Dis. 2023. PMID: 36681084 Free PMC article.