During the current century, each major coronavirus outbreak has triggered a quick surge of academic publications on this topic. The spike in research publications following the 2019 Novel Coronavirus (Covid-19), 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. SARS and 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前所未有的学术努力动员：SARS、MERS 和 2019-nCov 文献的科学计量比较

在本世纪，每次重大的冠状病毒爆发都引发了有关该主题的学术出版物的快速激增。然而，在 2019 年新型冠状病毒 (Covid-19) 之后，研究出版物的激增是独一无二的。Covid-19 大流行造成的全球危机以前所未有的方式动员了科学努力。在不到五个月的时间里，已有超过 12,000 个研究项目被索引，而且数量每天都在增加。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科的关注焦点。在这里，对 Covid-19 文献的科学计量方面进行了分析，并与之前两种主要的冠状病毒疾病（即 SARS 和 MERS）进行了对比。重点是关键术语的同时出现，期刊的书目耦合和引文关系以及国家间的合作。发现了所有三篇文献中的某些重复模式。所有三起疫情通常都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病控制相关的研究，(ii) 与病毒化学成分相关的研究，以及 (iii) 与治疗、疫苗和疫苗相关的研究和临床护理。虽然与类别 (i) 相关的研究似乎是最先出现的，但与其他两个类别的研究相比，它们总体上获得的引用次数最少。Covid-19 研究似乎分布在更广泛的期刊和学科领域。在每次暴发的地理起源或每次暴发的当地地理严重程度与源自地区的研究规模之间观察到明显的联系。与 SARS 和 MRS 相比，Covid-19 研究还显示了来自更广泛国家的作者的参与。