When yet another doctor — Dr. Ellie Cannon , who frequently serves as an expert on British TV — threw her support behind the doctors in this debate, Harris attempted to mansplain vaccines to her. "I think I would save a lot of people getting your free neurotoxin shot at your clinic this winter," he wrote. He then screenshotted a medical paper simply stating that preservatives should be used to keep bacterial out of vials as supposed evidence for his anti-vaccine claims.