The Covid‐19 containment effects of public health measures: A spatial difference‐in‐differences approach
研究了2020年春季德国第一波疫情期间六类公共卫生措施对遏制新冠疫情的效果，发现接触限制、强制戴口罩和学校关闭显著拉平了感染曲线，而餐厅关闭的效果不稳健，其他措施无额外效果。
The paper studies the containment effects of public health measures to curb the spread of Covid-19 during the first wave of the pandemic in spring 2020 in Germany. To identify the effects of six compound sets of public health measures, we employ a spatial difference-in-differences approach. We find that contact restrictions, mandatory wearing of face masks and closure of schools substantially contributed to flattening the infection curve. The significance of the impact of restaurant closure does not prove to be robust. No incremental effect is evidenced for closure of establishments and the shutdown of nonessential retail stores.