Trust in scientists on COVID-19 vaccine hesitancy and vaccine intention in China and the US.

When we recognize various factors which influence vaccine willingness, it is unclear whether these factors work the same in different countries. This study explored how trust in scientists was related to COVID-19 vaccine hesitancies and vaccine willingness in China and the U.S. We attempted to understand the extent to which the perceived trustworthiness of scientists would predict vaccine hesitancies and intention to get vaccinated differently in these two countries. An online survey with participants in China (N = 391) and in the U.S. (N = 363) was conducted. Participants were asked about their view of scientists' competence, benevolence, and integrity as dimensions of trustworthiness, three types of vaccine hesitancies, as well as their willingness to get vaccinated. The results showed that trust in scientists was negatively related to individual vaccine hesitancy in both China and the U.S., and trust was negatively associated with the level of contextual hesitancy and vaccine-specific hesitancy in the U.S. Higher trust in scientists was also associated with the willingness to get vaccines in the U.S., rather than in China. Results yielded differences in China and the U.S. in how trust in scientists and vaccine hesitancies predicted individuals' willingness to get vaccinated.