Background: COVID-19 caused unprecedented literature upsurge, and the world has worked together to fight the epidemic.Methods: We conducted a bibliometric analysis to evaluate the research trends and reveal the core contents, based on publication outputs, geographical distribution, collaborations and hot keywords.Results: Our analysis revealed the following: (1) The publication outputs obviously increased after SARS and MERS outbreaks, while sharply on rise during COVID-19 outbreak. Compared with SARS and MERS, COVID-19 aroused more dramatic and prolonged upsurge. (2) Compared with SARS and MERS, COVID-19 caused more widespread and powerful influences on countries or territories at short notice. Countries or territories displayed more international collaborations and communications to cope with the epidemics, and COVID-19 remarkably boosted the research advancements. (3) Given the keywords, we identified that multiple optional methods were used to cope with the SARS-CoV-2 infection based on the features of biology and immune responses.Conclusions: Epidemics extremely accelerated the research boom and evolution.