1 How Do Mode and Frequency of Covid-19 Information Updates and Political Values Affect Attitudes to a Future Covid-19 Vaccine? Siobhan McAndrew, University of Bristol 1 Daniel Allington, Kings College London 14 August 2020 Abstract Background The effect of social media consumption on perceptions of the seriousness of the Covid- 19 pandemic, attitudes to public health requirements, and intentions towards a future Covid-19 vaccine are of live public health interest. There are also public health and security concerns that the pandemic has been accompanied and arguably further amplified by an ‘infodemic’ spreading misinformation. Tests of the effect of social media consumption on future Covid-19 vaccine intentions using population samples have been relatively few to date. This study contributes to the evidence base by examining social media consumption and vaccine intentions using British and US population samples. Methods Data were gathered on 1,663 GB adults and 1,198 US adults from an online panel on attitudes towards a future vaccine alongside self-reported social and legacy broadcast and print media consumption. Ordered and binomial logit models were used to assess reported intentions regarding a future Covid-19 vaccine, testing the effects of media consumption type. Respondents were categorised in terms of their media consumption using a fourfold typology, as less frequent social, less frequent legacy media consumers (low-low); high social, low legacy media consumers (high-low); low social, high legacy (low-high); and high social, high legacy (high-high). 1 Data were shared by the Center for Countering Digital Hate for secondary analysis. No external funding source support was used for the secondary data analysis. No funders had any role in study design, data analysis, publication of a working version, or preparation of the manuscript.