During the current century, each major coronavirus outbreak has triggered a quick and immediate surge of academic publications on this topic. The spike in research publications following the 2019 Novel Coronavirus (Covid-19) outbreak, however, has been like no other. The global crisis caused by the Covid-19 pandemic has mobilised scientific efforts in an unprecedented way. In less than five months, more than 12,000 research items have been indexed while the number increasing every day. With the crisis affecting all aspects of life, research on Covid-19 seems to have become a focal point of interest across many academic disciplines. Here, scientometric aspects of the Covid-19 literature are analysed and contrasted with those of the two previous major Coronavirus diseases, i.e. Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS). The focus is on the co-occurrence of key-terms, bibliographic coupling and citation relations of journals and collaborations between countries. Certain recurring patterns across all three literatures were discovered. All three outbreaks have commonly generated three distinct and major cohort of studies: (i) studies linked to the public health response and epidemic control, (ii) studies associated with the chemical constitution of the virus and (iii) studies related to treatment, vaccine and clinical care. While studies affiliated with the category (i) seem to have been the first to emerge, they overall received least numbers of citations compared to those of the two other categories. Covid-19 studies seem to have been distributed across a broader variety of journals and subject areas. Clear links are observed between the geographical origins of each outbreak or the local geographical severity of each outbreak and the magnitude of research originated from regions. Covid-19 studies also display the involvement of authors from a broader variety of countries compared to SARS and MRS.

中文翻译：

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Covid-19大流行和健康危机引发的学术活动空前动员：SARS，MERS和2019-nCov文献的科学计量比较

在本世纪中，每一次主要的冠状病毒爆发都引发了有关该主题的学术出版物的迅速而迅速的增长。然而，在2019年新型冠状病毒（Covid-19）爆发后，研究出版物的数量激增。由Covid-19大流行引起的全球危机以前所未有的方式动员了科学力量。在不到五个月的时间里，已经索引了12,000多个研究项目，而这一数字每天都在增加。随着危机影响到生活的方方面面，对Covid-19的研究似乎已成为许多学术领域的关注焦点。在这里，对Covid-19文献​​的科学计量方面进行了分析，并将其与之前的两种主要冠状病毒疾病，即 严重急性呼吸系统综合症（SARS）和中东呼吸系统综合症（MERS）。重点是关键词的共现，国家之间期刊的书目耦合和引用关系以及合作。在所有三篇文献中都发现了某些重复出现的模式。所有这三种疾病暴发通常产生了三个不同的主要研究队列：（i）与公共卫生应对和流行控制相关的研究，（ii）与病毒的化学成分相关的研究，以及（iii）与治疗，疫苗相关的研究和临床护理。尽管与（i）类别相关的研究似乎是最先出现的，但与其他两个类别相比，它们总体上被引用的次数最少。Covid-19研究似乎已经分布在更广泛的期刊和主题领域中。在每次暴发的地理起源或每次暴发的当地地理严重性与源自区域的研究规模之间，都可以发现明确的联系。与SARS和MRS相比，Covid-19研究还显示了来自更多国家的作者的参与。