An Ohio teenager recently got vaccinated, against the wishes of his mother, after he conducted his own research that challenged what he'd been told during his childhood. Jill Wheeler, the mother of Ethan Lindenberger, 18, vaccinated her oldest daughter and partially vaccinated her oldest son. But, according to NPR, when she found out she could opt out of immunizations, she didn't vaccinate her youngest five children, including Lindenberger. As a child, Lindenberger told NPR that his mother told him about negative side effects of vaccines, including a theory that they cause brain damage and the debunked study that vaccines are linked to autism. Given that most of his siblings weren't vaccinated, the teenager thought it was normal to not be immunized to diseases.