Abstract
Introduction
Assessing vaccine serologic status presents opportunities to provide live vaccinations to kidney transplant candidates (KTC). This is especially important given the increased risk of infection while taking lifelong immunosuppression following transplant and the inability to routinely provide live vaccines to patients on immunosuppressive medications. In March 2019, the American Society of Transplantation Infectious Disease Community of Practice (AST-IDCOP) released updated guidelines for vaccination of KTC, which emphasize pretransplant viral serology screening and live vaccine administration prior to transplant.
Primary Endpoint
The primary endpoint of this study was to determine adherence to AST-IDCOP guidelines for live measles, mumps, and rubella (MMR) and VZV vaccination prior to transplant in KTC non-immune by serology.
Methods
This retrospective, descriptive study examined serologic status and rates of live vaccination in 672 patients listed for kidney transplant at our center between July 2014 and July 2019. Secondary endpoints included subgroup analysis of adherence to full AST-IDCOP vaccination recommendations and validation of CDC presumed immunity definitions for measles and VZV.
Results
Seventeen patients (2.7%) were nonimmune by serology for VZV, while 182 (27.1%) were nonimmune by serology to MMR. In a subgroup analysis of the seronegative KTC, none received VZV vaccination, and 6% received MMR vaccination prior to transplant or last follow-up.
Conclusions
Overall, a large portion of KTC had immunity gaps that were not resolved before transplantation. These findings are limited due to the retrospective, single-center nature of this study and should be confirmed with larger, prospective assessments of serologic status and vaccine administration.
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