iHeard STL: Development and first year findings from a local surveillance and rapid response system for addressing COVID-19 and other health misinformation.

Our first-year experience suggests that this systematic, community-based approach to assessing and addressing misinformation is feasible, sustainable, and a promising strategy for responding to the threat of health misinformation. In addition, further studies are needed to understand whether structural factors such as medical mistrust underly the observed racial differences in exposure and belief.