@EntropyChase @michaelmina_lab They were developed and tested to stop symptomatic infection, something they don't do very well any more. The vaccines needed to be updated. We're using vaccines developed for a virus that no longer exists. There is some cross-immunity, but not great.
@EntropyChase@michaelmina_实验室他们被开发和测试来阻止症状性感染，这一点他们已经做得不太好了。疫苗需要更新。我们正在使用为一种不再存在的病毒研制的疫苗。有一些交叉免疫，但不是很好。