Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an ongoing global health emergency. Here we highlight nine most important research questions concerning virus transmission, asymptomatic and presymptomatic virus shedding, diagnosis, treatment, vaccine development, origin of virus and viral pathogenesis.

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SARS-CoV-2 和 COVID-19：最重要的研究问题

由严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 引起的 2019 年冠状病毒病 (COVID-19) 是一种持续的全球卫生紧急情况。在这里，我们重点介绍九个最重要的研究问题，涉及病毒传播、无症状和症状前病毒排出、诊断、治疗、疫苗开发、病毒起源和病毒发病机制。