What Vietnam’s localized lockdown policy showed: it did not work and was too late
研究了越南2021年1-7月63个省份的每日数据，发现局部封锁虽减少了公共场所访问，但未能阻止感染病例增加，表明封锁实施过晚且不够严格。
Vietnam was previously lauded as a model for fighting the COVID-19 pandemic and it imposed localized lockdowns to deal with the emergence of deadly new variants. Here, daily data from 63 Vietnamese provinces for the period January–July 2021 (i.e., before vaccinations became available) are collected, and a panel event study is performed to evaluate the effectiveness of the localized lockdown policy. The number of infected cases is found to increase despite the lockdowns reducing visits to public areas. These results have implications for the lateness of the localized lockdowns and strictness of social distancing.