Objective: Evaluation of a mandatory immunization program to increase and sustain high immunization coverage for healthcare personnel (HCP).
Design: Descriptive study with before-and-after analysis.
Setting: Tertiary-care academic medical center.
Participants: Medical center HCP.
Methods: A comprehensive mandatory immunization initiative was implemented in 2 phases, starting in July 2014. Key facets of the initiative included a formalized exemption review process, incorporation into institutional quality goals, data feedback, and accountability to support compliance.
Results: Both immunization and overall compliance rates with targeted immunizations increased significantly in the years after the implementation period. The influenza immunization rate increased from 80% the year prior to the initiative to >97% for the 3 subsequent influenza seasons (P < .0001). Mumps, measles and varicella vaccination compliance increased from 94% in January 2014 to >99% by January 2017, rubella vaccination compliance increased from 93% to 99.5%, and hepatitis B vaccination compliance from 95% to 99% (P < .0001 for all comparisons). An associated positive effect on TB testing compliance, which was not included in the mandatory program, was also noted; it increased from 76% to 92% over the same period (P < .0001).
Conclusions: Thoughtful, step-wise implementation of a mandatory immunization program linked to professional accountability can be successful in increasing immunization rates as well as overall compliance with policy requirements to cover all recommended HCP immunizations.