covid-19September 27, 2020 A trip to South Korea offers glimpse at how the country prevents infection from travelers Sally Shin, executive editor of the NBC News business and tech unit, describes a meticulous system that misses no detail. Related posts U.K.'s Johnson launches mass testing…Do you need a Covid-19…What's behind workers' hesitation to…Fully vaccinated people can travel…Younger Latino men are Covid's…Salmonella infections in eight states…Salmonella infections in eight states…The U.S. isn't losing to…Virus-killing robot tested for use…In Covid fight, Cuba touts…