I think one of the key messages for some of the research that looks into why people are hesitant to get vaccines is that there's not a single reason. Dr. Lavoie's research suggests that there are a few categories of people who resist vaccines. It might be that some folks need more information. For some folks, it's much more practical: They have difficulty leaving work or getting child care to go and get vaccines.
For others, it really might have to do with confidence. The way in which health care providers speak to their patients about their concerns really impacts how they follow up on their advice. I'm sure my medical colleagues here would agree with that. The better someone understands their disease and their treatment options, the better-informed the decision they're going to make.
I think the important take-away of the behavioural science research is that there are many reasons why people may be hesitant to get a vaccine, and what you do about it depends on the reason they have.