Fear of vaccination has been around since the first vaccine over 200 years ago. But now the anti-vaccine has grown from a fringe phenomenon to a mainstream movement. How, and why? To help answer this question on the show this week is science journalist Tara Haelle. Learn more about your ad choices. Visit megaphone.fm/adchoices See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.