The preservative thimerosal has been removed from all but a few vaccines, and studies have confirmed no link to neurodevelopmental issues including autism. So public health experts were puzzled when it appeared on the agenda for this week’s meeting of outside vaccine advisers to the US Centers for Disease Control and Prevention.

Lyn Redwood, who spread debunked claims about vaccines, will be in the CDC's Immunization Safety Office, multiple CDC officials tell CBS News.

A crucial government panel of vaccine advisors will hold its first meeting since Health and Human Services Secretary Robert F. Kennedy Jr. appointed several vaccine critics to the group.  Kennedy removed and replaced members of the Advisory Committee on Immunization Practices,