National trends and disparities in herpes zoster vaccination among US older adults with chronic obstructive pulmonary disease, 2008 to 2022

Background: Chronic obstructive pulmonary disease (COPD) is a risk factor for herpes zoster. Vaccination can prevent or attenuate herpes zoster and its related complications. However, evidence regarding vaccine uptake among patients with COPD is limited. Therefore, this study aimed to evaluate trends in herpes zoster vaccination and characteristics associated with vaccination among US older adults with COPD. Methods: Data from the 2008 to 2022 National Health Interview Survey were used. Participants aged ≥50 years were included. Joinpoint regression analysis was performed to analyze trends in herpes zoster vaccination. A multivariable logistic regression model was used to identify factors associated with vaccination. Results: From 2008 to 2022, an increasing trend in herpes zoster vaccination was observed (average annual percent change = 15.10, P <. 01). This increasing trend was also observed when stratified by age groups. Disparities in vaccination were found across several factors, including age, sex, race or ethnicity, region, educational level, health insurance, income, smoking status, perceived health status, and flu and pneumococcal vaccination. Conclusions: There has been an upward trend in herpes zoster vaccination over the past 15 years among older adults with COPD. Disparities across several characteristics existed, underscoring the necessity for targeted policies and interventions to promote equity in vaccination.