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INTRODUCTION: Herpes zoster increases stroke and myocardial infarction (MI) risk. The objective of this study is to evaluate the impact of live attenuated zoster vaccination on stroke and MI risk in patients at-risk for zoster including persons with hypertension, diabetes mellites, obesity, hypercholesterolemia, chronic kidney disease, chronic obstructive pulmonary disease, emphysema, asthma, and chronic liver disease. METHODS: Retrospective cohort study utilizing continuous de-identified claims data from the IBM MarketScan® Commercial Claims and Encounters Database (collected from 2005-2018) containing data for 200 million commercially insured Americans. Participants included 27,093 adults vaccinated against zoster with at least 5 years continuous enrollment, age and sex-matched 1:5 with unvaccinated controls. Odds ratios, risk difference, and number needed to treat (NNT) evaluated the effect of vaccination on stroke and MI while controlling for relevant comorbidities. RESULTS: Over five years, proportions of MI (1.29% vs 1.82%; p<0.05) and stroke (1.61% vs. 2.20%; p<0.05) were lower in vaccinated versus unvaccinated individuals respectively, controlling for age and sex, with greatest benefit for people with diabetes (stroke OR [95% Confidence Limits] 0.64 [0.58, 0.71], MI 0.63 [0.57, 0.71]). Although hypertension and chronic obstructive pulmonary disease (COPD) had highest odds of stroke and MI, vaccination still provided significant risk-reduction (Hypertension: stroke 0.75 [0.68, 0.83], MI 0.73 [0.65, 0.81]; COPD: stroke 0.75 [0.68, 0.83], MI 0.74 [0.66, 0.83]). CONCLUSIONS: Live attenuated zoster vaccination is associated with lower risk stroke and MI in adults with at-risk comorbidities, controlling for age and sex. Vaccination may provide cardiovascular benefits beyond zoster prevention.
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BACKGROUND: Herpes zoster increases the risk for stroke and myocardial infarction. Zoster vaccination's impact on this risk is understudied. This retrospective work sought to determine if prophylactic herpes zoster vaccination may reduce the risk of stroke, myocardial infarction, and/or mortality. METHODS: A cohort analysis utilized TriNetX, a national, federated database. In one analysis, patients who received 2 doses of recombinant zoster vaccine (RZV) were compared to adults without RZV. A 1:1 propensity-score match analysis was conducted to adjust for demographics and comorbidities in calculating adjusted relative risks (aRR) with 95% confidence intervals. First-time incidences for myocardial infarction, stroke, and mortality were assessed after 3 years. A subgroup analysis between RZV and zoster vaccine live (ZVL) was also assessed. RESULTS: Matched cohorts of 7,657 patients revealed that adults who received 2 doses of RZV were at lower risk of MI (aRR [95% CI]) = (0.73 [0.55, 0.96]) and mortality (0.7 [0.57, 0.88]) while having similar risk for stroke (0.97 [0.75, 1.26]). Further subgroup analysis also revealed a reduced risk of 3-year mortality when compared to the ZVL cohort (0.84 [0.74, 0.95]). Sample size and comorbidities included in the analysis were limited by using a large database. CONCLUSIONS: RZV reduces the 3-year risk for myocardial infarction and mortality. J Drugs Dermatol. 2023;22(12):1178-1182. doi:10.36849/JDD.7415.
