“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.

The who’s who of snake-oil salesmen begins, unsurprisingly, with “Dr” Mercola.

Just 12 People Are Behind Most Vaccine Hoaxes On Social Media, Research Shows : NPR