Japan has been recognized as having successfully controlled the spread of COVID-19. This study aims to gather insights to combat the spread of infection in our daily lives by observing our purchasing behavior. We use point of sales (POS) data from supermarkets, convenience stores, home centers, drug stores, and electronics retail stores for a nationwide analysis. Our analysis revealed the following. First, the Japanese actively prevented the spread of infection by voluntarily wearing masks, using alcohol-based disinfectants, and gargling. Second, they willingly stayed home during the semi-lockdown. Third, they continued to purchase infection prevention essentials during periods of both low and high levels of infection. We conclude that continuing to wear masks, wash and sanitize hands, and gargle, along with spending more time at home to maintain safe distancing, will be effective in reducing the spread of the virus and combatting the pandemic. Finally, infections and deaths were primarily concentrated in the Tokyo metropolitan area and the Kansai region, where the nature of the spread of the infection was different from that in small and middle-sized prefectures.

中文翻译：

---

日本是如何应对 COVID-19 的？大数据与购买行为

日本已被公认为成功控制了 COVID-19 的传播。本研究旨在通过观察我们的购买行为来收集见解，以对抗感染在我们日常生活中的传播。我们使用来自超市、便利店、家居中心、药店和电子产品零售店的销售点 (POS) 数据进行全国性分析。我们的分析揭示了以下内容。首先，日本人通过自愿戴口罩、使用酒精消毒剂和漱口等方式积极阻止感染传播。其次，他们在半封锁期间心甘情愿地呆在家里。第三，他们在低感染率和高感染率期间继续购买预防感染的必需品。我们得出的结论是，继续戴口罩、洗手和消毒以及漱口，除了在家里花更多时间保持安全距离外，还将有效减少病毒的传播和抗击大流行。最后，感染和死亡主要集中在东京都市区和关西地区，这些地区的感染传播性质与中小县不同。