>Leaky vaccines are a serious problem but only a small group of vaccines fit that definition and, so far, that's the only real example of it happening in animal

>Leaky vaccines are a serious problem but only a small group of vaccines fit that definition and, so far, that's the only real example of it happening in animals at scale. One problem is that BigPharmaCo has an extreme financial incentive to induce this scenario. They could turn every person on earth into a lifelong subscriber.