Researchers have found just 12 people are responsible for the bulk of the misleading claims and outright lies about COVID-19 vaccines that proliferate on Facebook, Instagram and Twitter. "The 'Disinformation Dozen' produce 65% of the shares of anti-vaccine misinformation on social media platforms," said Imran Ahmed, chief executive officer of the Center for Countering Digital Hate, which identified the accounts. (Joseph Mercola, Robert F. Kennedy Jr., etc.)