The impact of clinical pharmacy services on pneumococcal vaccine frequency and appropriateness in a family medicine clinic.

Objective: To evaluate the impact of an ambulatory clinical pharmacy service (inclusive of immunization needs assessments) on the frequency and appropriateness of pneumococcal vaccine administration in a family medicine clinic.

Methods: This cohort study had an observational and retrospective design and included patients who received pneumococcal vaccines at a family medicine clinic in a medically underserved area in Southwestern Pennsylvania across a 42-month period from January 1, 2015, to June 30, 2018. The outcome measures included the administration and appropriateness of pneumococcal 13-valent conjugate (PCV13) and pneumococcal 23-valent polysaccharide (PPSV23) vaccines across 3 time cohorts including before, during, and after the establishment of a clinical pharmacy service.

Results: A total of 457 pneumococcal vaccines were administered, including 198 (43.3%) PCV13 and 259 (56.7%) PPSV23, across all time cohorts. Overall vaccine administration per month increased by 143% with the introduction of a dedicated clinical pharmacy service, including a 270% increase for PCV13 and an 87% increase for PPSV23. A strong correlation was found between recommendations made and doses administered for both pneumococcal vaccines (r = 0.89; P < 0.003). Across the entire time frame, PPSV23 administrations were appropriate in more than 96% of instances, whereas the appropriateness of PCV13 administrations were statistically significantly improved after the introduction of a fully dedicated clinical pharmacy service (58.5% vs. 90.8%; P < 0.05). The appropriateness of vaccine administration remained high even after the reduction of clinical pharmacy services.

Conclusion: Clinical pharmacy service implementation in a family medicine clinic was associated with increased pneumococcal vaccine administration and increased appropriateness of PCV13 administrations.