The Center for Countering Digital Hate, a UK/US nonprofit and nongovernmental organization, found that the vast majority of COVID-19 antivaccine misinformation and conspiracy theories originated from just 12 online personalities they dubbed the “disinformation dozen,” who have a combined following of 59 million people across multiple social media platforms. CCDH analyzed 812,000 Facebook posts and tweets and found 65% came from the disinformation dozen.