@drensber @berman_allen @sameo416 It's not common in all but the most extreme shared public settings (e.g. crowded bar/party with no ventilation) for everyone to become infected even if no immunity and infector present. Exposures differ.
@drensber@berman_allen@sameo416除了最极端的公共场所（例如拥挤的酒吧/派对，没有通风）外，在所有公共场所都不常见，即使没有免疫力和感染者在场，每个人都会受到感染。风险敞口不同。