新十年伊始，新冠状病毒又现

人畜共患型冠状病毒已经是几十年来第三次跨物种感染人类。最新暴发的病毒被暂时命名为2019-nCoV（新型冠状病毒），最早在中国武汉暴露于海鲜或生鲜市场的人群中检出。中国公共卫生、临床和科学界的迅速响应帮助我们认识这一临床疾病并初步了解感染的流行病学。最初的报道表明人际传播有限或不存在，但我们现在知道人际传播是存在的，但其程度尚不清楚。就像另外两种致病性人类呼吸道冠状病毒（严重急性呼吸综合征冠状病毒[SARS-CoV]和中东呼吸综合征冠状病毒[MERS-CoV]）引起的暴发一样，2019-nCoV引起的呼吸道疾病通常为重度¹。截至2020年1月24日，报告的病例已超过800例，死亡率为3%（https://promedmail.org/）。

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作者信息

Stanley Perlman, M.D., Ph.D.
From the Department of Microbiology and Immunology, University of Iowa, Iowa City.

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