National survey results published yesterday in JAMA Network Open show that the number of people who say they are somewhat or very likely to seek COVID-19 vaccination fell from 74% to 56% from April to December, after press coverage of high effectiveness for two vaccines in phase 3 trials but before they were authorized for emergency use in the United States.The study results, published as a research letter, were based on biweekly, online, probability-based tracking surveys of 8,167 community-dwelling adult US participants in the Understanding America Study, led by researchers at the University of California, Los Angeles.