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SARS-CoV-2 infection has been associated with increased morbidity and mortality in organ transplant recipients, and data are limited on 2-dose or 3-dose vaccine immunogenicity against SARS-CoV-2 variants in this population. In this secondary analysis of a randomized trial of a third dose of mRNA-1273 vaccine versus placebo, the authors assessed neutralizing antibody responses against SARS-CoV-2 variants in transplant recipients after 2 and 3 vaccine doses.

No abstract