When presented with information showing vaccines are safe, anti-vaxxers double down their beliefs rather than becoming more pro-vax. User PM_ME_UR_GOODIEZ, in the Debate Vaccines subreddit, 21 Jun 2017
Pro-vaccine messages may be counterproductive among vaccine-hesitant parents User Zylooox, in the Reddit Science subreddit, 09 Dec 2014
Effective Messages in Vaccine Promotion: A Randomized Trial User nicholsml, in the Information about vaccine safety and combating anti-science rhetoric. subreddit, 07 Jun 2014