Reduced Neutralization Efficacy against Omicron Variant after Third Boost of BNT162b2 Vaccine among Liver Transplant Recipients.

Although the titer of neutralizing antibodies against the variants was numerically lower among the LT recipients receiving CNI in combination with MMF compared to mTOR in combination with CNI, and it was lower among those receiving CNI in combination with mTOR compared to CNI monotherapy, these differences did not reach statistical significance ( Figure 2 ).

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