Pro-vaxxer

More facts, better education and less fake news are a start. But such strategies alone are unlikely to break through social media bubbles. One study of 2.6 million Facebook users found that anti-vaxxers and pro-vaxxers tend to gravitate towards others who share their views.

One proposal, a favorite of anti-vaxxers, would require doctors to make vaccine package inserts available to families, in the expectation, pro-vaxxers say, that the list of chemical ingredients and possible side effects–included on all inserts for all drugs–would scare parents into saying no.