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Influence of critically appraising exemption requests from healthcare personnel along a spectrum of influenza vaccine hesitancy
Eby, J. C., Richey, M. M., Sifri, C. D., & Schuch, J. Z. (2022). Influence of critically appraising exemption requests from healthcare personnel along a spectrum of influenza vaccine hesitancy. Infection Control and Hospital Epidemiology, 43(11), 1672-1678. Article PII S0899823X21005134. https://doi.org/10.1017/ice.2021.513
OBJECTIVES: This study was performed to assess whether an intervention for critically appraising influenza vaccine exemption requests from healthcare personnel (HCP) affected (1) the overall rate of influenza vaccine exemption within a healthcare institution and/or (2) the rates of postintervention vaccine acceptance among those who inconsistently request exemption from annual vaccination and those who consistently request exemption from vaccination.
SETTING: We conducted the study at a single academic medical center.
PARTICIPANTS: This study included 29,663 HCP.
METHODS: Between 2010 and 2019, HCP were permitted to request an exemption from influenza vaccination without critical appraisal of exemption requests. After January 2019, medical center policy required critical appraisal of exemption requests. Of those employed 3 or more years who requested an exemption at least once during the preintervention period (n = 1,177), those with unchanging exemption reasons annually were termed "consistent exempters." Those who changed reasons or accepted vaccination n ≥ 1 times were termed "inconsistent exempters."
RESULTS: The overall exemption rate from influenza vaccine decreased from 3.8% to 1.2% (P < .001; N = 29,663) after the intervention. Of those requesting exemption at least once before the intervention, 329 (28.0%) of 1,177 were consistent exempters and 878 (72.0%) were inconsistent exempters. Of inconsistent exempters employed after the intervention, 442 (88.9%) of 497 accepted vaccine postintervention compared with 118 (59.6%) of 198 consistent exempters (P < .001). Of all exempters who changed from exemption to acceptance after the intervention, 442 (78.9%) of 560 were inconsistent exempters.
CONCLUSIONS: Critical appraisal of HCP exemption requests promotes influenza vaccine acceptance, and acceptance by inconsistent exempters drives the effect of the intervention. Analysis of changes in annual exemption requests represents a novel objective method for describing those on the spectrum of vaccine hesitancy.