“…The 2019 Summit explored several new challenges and opportunities that are shaping both the contours and dynamics of the digital health communication space. These included showcasing emergent research on the promising use of Internet search engines and data mining to prevent or diagnose diseases (e.g., Cheng & Yom-Tov, 2019;Hochberg, Daoud, Shehadeh, & Yom-Tov, 2019;Ofran, Paltiel, Pelleg, Rowe, & Yom-Tov, 2012); understanding the role of stigma, misinformation, misconception, and autonomous Internet actors ("bots") that have capacity to distort, controversialize, and undermine public perceptions of public health issues, such as vaccine safety and vaccine hesitancy (e.g., Broniatowski et al, 2018;Dredze, Broniatowski, Smith, & Hilyard, 2016;Fraser, 2019;Jamison, Broniatowski, & Quinn, 2019); understanding the increased use and impact of visuals on health perceptions and the variations in tone, stance, and accuracy of information available at moderated versus unmoderated public websites (e.g., Shoup et al, 2019); and illuminating the increasing challenges to protecting public health presented by what are commonly referred to as the "Dark Net" and "Deep Web" (e.g., Carson, 2018;Mackey, 2018;McCormick, 2014).…”