Irish leader's three-word message as he blasts Trump's unfounded autism claimsTrump made unfounded claims about Tylenol and repeated a discredited link between vaccines and autismSimon Harris speaks out on US autism controversyTanaiste Simon Harris blasted Donald Trump for making unfounded claims about the causes of autism and urged the US president to "follow the science". Vaccines have a really, really important public health role to play and vaccines don't have any causal link with autism. Harris is a former minister for health and his brother Adam Harris is the CEO of Irish autism charity AsIAm. "If the link between acetaminophen and autism were strong, it would likely have been consistently observed across multiple studies," Jasarevic said. "This lack of replicability really calls for caution in drawing casual conclusions about the role of acetaminophen in autism."