Characteristics associated with hepatitis A vaccination initiation and completion among adults traveling to a country of high or intermediate endemicity

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Hepatitis A (HepA) vaccine is recommended for adults traveling to a country of high or intermediate endemicity. The data from the 2016 and 2017 National Health Interview Survey were pooled in this analysis, and the weighted logistic regression model was adopted. Characteristics independently associated with HepA vaccination initiation (≥1 dose) (in descending order by odds ratio) include age, receipt of pneumococcal and influenza vaccine, education, sexual orientation, region, number of physician visits in the past 12 months, physical activity, marital status, computer use, ratio of family income to the poverty threshold, Hispanic ethnicity, and class of worker. Characteristics independently associated with HepA vaccination completion (≥2 doses) (in descending order by odds ratio) include age, receipt of pneumococcal and influenza vaccine, sexual orientation, education, region, marital status, number of physician visits in the past 12 months, ratio of family income to the poverty threshold, physical activity, Hispanic ethnicity, and computer use. HepA vaccination initiation and completion was associated with a number of characteristics, which can be used to develop strategies to increase HepA vaccination coverage among adults traveling to a country of high or intermediate endemicity.