Keywords DCNC_2019, DCNC, Social media, Facebook, Instagram, Pintrest, Twitter, Anti-Vaccine, Anti-Vax, Echo Chambers, Confirmation bias, Elective exposure theory, Bias assimilation, Targeted advertising, Online freedom, World Health Organisation, WHO, Social networks, Online communities. Abstract In the first few months of 2019 a large amount of attention has been drawn to the roles that social media giants… Continue reading Online communities, echo chambers and the anti-vaccine movement.