介绍：On digital this October. 　　On January 20th, 2020 the US and South Korea both discovered their first cases of COVID-19. However, 9 months later, the novel Coronavirus has claimed the lives of over 200,000 Americans and caused staggering economic damage, while in South Korea, there were no significant lockdowns and, in an urbanized population of 51 million, only 344 lives have been..