"Study claims no link between vaccines and autism"

I liked the title on the Chicago Tribune story about the new study that says that there is no scientific link between vaccines and autism. The title writer obviously assumes that we all think that there is a link, even though the conclusion has consistently been that there is no link. Otherwise, why wrote a title like "Study claims no link between vaccines and autism". The idea of the link is somehow tied up with leftist politics, in a way that I do not understand.