YouTube is expanding its vaccine misinformation policies to include all vaccines approved by health agencies, pursuing more aggressive enforcement against anti-vaccine content and deleting specific accounts.

The social media company will remove any content that “falsely alleges” vaccines approved by the World Health Organization (WHO) are dangerous or ineffective at reducing transmission, as well as content that claims the vaccines contain certain substances, YouTube said in a blog post Wednesday announcing its new guidelines. Examples include claims that vaccines cause autism, infertility, or include microchips and tracking devices, the company said.

YouTube will also remove conspiratorial vaccine content, such as claims that vaccines are part of a depopulation agenda. The tech company said it implemented these new policies after consulting with health experts.

YouTube is also removing specific accounts deemed to have a pattern of sharing vaccine misinformation, YouTube executives told several outlets Wednesday. These accounts include anti-vaccine advocates Joseph Mercola, Erin Elizabeth, Sherri Tenpenny, and Robert F. Kennedy Jr., all of whom were featured in a report titled “The Disinformation Dozen” by the Center for Countering Digital Hate which was referenced by the White House in its urging of Facebook to crack down on COVID-19 misinformation.