 Misinformation about COVID-19 is a serious threat to public health. Our study found that people who believe in false or exaggerated claims about the virus are more likely to be non-compliant with public health guidelines and less likely to get vaccinated themselves or recommend it to others. Additionally, those who have greater trust in scientists and higher numeracy skills are less likely to believe in misinformation. These findings suggest that interventions to increase trust in science and critical thinking could help reduce the spread of misinformation and protect public health. This article was authored by John Rosenbeek, Claudia Uschneider, Sarah Dryhurst, and others.