 This study found that COVID-19 vaccine booster shot hesitancy in China was 6.5% with factors such as unemployment, low monthly income, low knowledge scores, and low level of cues to action associated with hesitancy. The study also found that lower vaccine hesitancy was associated with high perceived importance of social media and official social media use, while higher hesitancy was associated with traditional media use. The authors suggest that more efforts are needed to regulate the content of social media and enhance the role of official social media in disseminating health information. This article was offered by Rui Tong Wang, Chen Yuanqin, Minit Du, and others.