Measles outbreak in Tonga despite (or rather, because of) a 99% vaccination rate. In any other beach of science this would be evidence of vaccine failure. But no, vaccines are not falsifiable. They will find ANY other reason for the failure of vaccines.
Vaccination is an ideological dogma. It is not a science. And anyone who dares question the faith, with science of all things, is roundly attacked as a heretic and burnt at the stake for blasphemy.