@MattNoahSmith You could look at mobility metrics and such (I don't suggest these directly measure transmission, but they are an indication of the macro effect of policies). Almost everywhere is nearly back to baseline, except downtown cores (due to persistent office WFH)
@MattNoahSmith您可以查看流动性指标等（我不建议这些指标直接衡量传播，但它们是政策宏观影响的指标）。几乎所有地方都几乎回到了基线，除了市中心核心区（由于持续的办公室WFH）