Humoral and cellular immunity to SARS-COV-2 after vaccination with mRNA vaccines in PLWH with discordant immune response. Influence of the vaccine administered.

In conclusion, in both groups of participants, IR and DIR, the anti-S-RBD IgG titers achieved at T1, the nAb titers at T1 and T2, the percentage of specific memory B cells, and the SARS-CoV-2-specific CD4+ T cell responses were higher among those vaccinated with mRNA-1273 compared to BNT162b2, although in some cases these differences did not reach statistical significance due to the small sample size in some groups.

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