米国では昨年、最初に感染した人がいる米国では昨年、最初に感染した人がいる Covid-19 Likely in U.S. in Mid-December 2019, CDC Scientists ReportThe new coronavirus infected people in the U.S. in mid-December 2019, a few weeks before it was officially identified in China and about a month earlier than public health authorit…www.wsj.com
Covid-19 Likely in U.S. in Mid-December 2019, CDC Scientists ReportThe new coronavirus infected people in the U.S. in mid-December 2019, a few weeks before it was officially identified in China and about a month earlier than public health authorit…www.wsj.com
