%0 Journal Article %T Response of Unvaccinated US Adults to Official Information About the Pause in Use of the Johnson & Johnson-Janssen COVID-19 Vaccine: Cross-Sectional Survey Study. %A Mishra V %A Dexter JP %J J Med Internet Res %V 26 %N 0 %D 2024 Apr 1 %M 38557597 %F 7.076 %R 10.2196/41559 %X Using a rapid response web-based survey, we identified gaps in public understanding of the Centers for Disease Control and Prevention's messaging about the pause in use of the Johnson & Johnson-Janssen COVID-19 vaccine and estimated changes in vaccine hesitancy using counterfactual questions.