@mraosu @michaelmina_lab Originally no. Initially the message was keep your mask on because vaccinated can still get infected and transmit. Some time during 2020 that story changed.
@mraosu@michaelmina_实验室最初没有。最初的信息是戴上口罩，因为接种疫苗仍然会感染和传播。在2020年的某个时候，这个故事发生了变化。