
This study used a mix-and-match method vs the same vaccine as a third dose in SOT recipients. This study included adult SOT recipients with functional grafts who had received two doses of the BNT162b2 vaccine. Both vaccines were safely used in this pilot randomized controlled trial comparing mix and match method vs uniform vaccination in SOT recipients. Since this was a small sample-sized study, there was no statistically significant difference in immunogenicity. However, the mix-and-match method showed a relatively lower geometric mean titer than a uniform vaccine.
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