*Purpose: The purpose of this project is to determine the impact pharmacists have on cardiothoracic transplant recipients’ vaccination status at the time of transplant surgery.

*Methods: A retrospective cohort analysis at a single institution was completed to assess vaccination status at the time of transplant and documented vaccines received within one year post transplant. All patients who received a heart or lung transplant at the institution between January 2008 and January 2011 before pharmacist involvement were compared to patients transplanted between January 2014 and January 2017 after pharmacist involvement. The primary outcome of the project is the change in vaccination rate at the time of transplant following implementation of a pharmacist into a cardiothoracic transplant clinic. Secondary outcomes include: the number of recipients fully vaccinated at the time of transplant, the change in vaccination rate for each individual vaccination, the difference in readmissions for preventable infectious diseases 12 months post-transplant. Comparisons were analyzed using Chi-squared or Fisher’s exact test.

*Results: The vaccination rate in the control group was 2.67 per person compared to 6.54 per person in the intervention group resulting a positive percent change of 145 percent (p-value: <0.0001). Thirty percent of patients were fully vaccinated at time of transplant in the intervention group compared to zero percent in the control group (p-value: <0.001). The percent of patients re-admitted within 12 months for a vaccine preventable disease did not differ significantly between the control and intervention group (13% vs. 10% respectively; p-value: >0.05).

*Conclusions: Pharmacist involvement pre-transplant improved vaccination rates and increased the number of patients fully vaccinated at time of transplant.

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