Abstract
COVID-19 vaccines have been developed and administered in the United States. Despite evidence from clinical trials for the effectiveness of the COVID-19 vaccines, many individuals are still hesitant or even unwilling to receive one. The purposes of this study are (1) to examine characteristics associated with those willing and unwilling to receive a COVID-19 vaccine and (2) to illuminate the reasons behind their willingness and unwillingness to receive the vaccine using both quantitative and qualitative data. Data collected from 505 US working adults showed that several demographic variables (i.e. education, the size of their organization, the number of dependents, political orientation, and religion) and influence sources (i.e. family members, workplace leaders, political leaders, social media influencers, and healthcare workers) significantly correlated with people's willingness/unwillingness to receive a COVID-19 vaccine. Furthermore, protecting oneself was the most common reason cited by participants for willingness to get the vaccine, while being concerned about vaccine side effects was the most frequently given reason for being unwilling to receive a COVID-19 vaccine. This study expands our current understanding of the COVID-19 vaccine motivators and intention factors. Practically, the findings can help develop health campaign messages effectively target working adults who are unwilling to receive the COVID-19 vaccines and ultimately increase the vaccination rate in the United States.