Characteristics associated with influenza vaccination uptake among adults

Annual influenza vaccination has been recommended for all adults since 2010. This study aimed to identify characteristics associated with influenza vaccination among adults.

Data from the National Health Interview Survey from 2011 to 2016 were analyzed.

Influenza vaccination coverage among adults increased from 38.28% in 2011 to 44.75% in 2016 (1.50% per year on average). In multivariate analysis, the largest magnitude of association was found with pneumococcal vaccine (lowest and highest odds ratios from 2011 to 2016: 3.37-3.78), followed by physician visits ≥4 in the past 12 months (2.33-3.03), age ≥65 years (1.69-2.07), having a usual place for sick care (1.41-1.94), insurance coverage (1.52-1.79), hepatitis B vaccine (1.48-1.71), ratio of family income to the poverty threshold ≥4 (1.19-1.54), race of Asian (1.24-1.47), number of years on the job ≥21 (1.21-1.41), class of worker (Federal government: 1.23-1.32, State government: 1.15-1.38), high-risk conditions (1.13-1.26), physical activity ≥5 times/week (1.11-1.25) and being female (1.13-1.20). However, adults living in West, and adults of Black/African American, never married, high school education, self-employed and current smokers had lower vaccine uptake.

Several characteristics were identified to be associated with influenza vaccination uptake, which could be useful for targeted efforts to improve influenza vaccination coverage among adults.