Among the eight people Robert F. Kennedy Jr. announced would make up his new group of outside vaccine advisers to the US Centers for Disease Control and Prevention are an emergency physician who posted Islamophobic commentary on social media and two doctors who were paid to provide expert testimony in trials against a vaccine maker.

Health Secretary Robert F. Kennedy Jr. named eight new members to the CDC’s Advisory Committee on Immunization Practices on Wednesday, including several anti-vaccine proponents, after dismissing all 17 existing advisers.