Vaccinated vs Unvaccinated - Dr. Stanley Plotkin Under Oath

Why are they so reluctant to do studies between vaccinated and unvaccinated children? And how can they claim that any vaccine is safe? This isn't science!

Original post: https://www.reddit.com/r/bestconspiracymemes/comments/12afgfb/vaccinated_vs_unvaccinated_dr_stanley_plotkin/