Figure 4

The credibility of news sites shared in anti- and pro-vaccine Facebook venues. News/non-news classifications are based on inclusion²⁹. Source credibility ratings are from Ad Fontes Media (AFM), professional fact-checkers (FC), Media Bias/Fact-Check (MBFC), using measures from²⁹. Facebook venues are from²⁷. Horizontal lines indicate median values for each group.