The outbreak of the COVID-19 has seriously affected the whole society, and vaccines were the most effective means to contain the epidemic. This paper aims to determine the top 100 articles cited most frequently in COVID-19 vaccines and to analyze the research status and hot spots in this field through bibliometrics, to provide a reference for future research. We conducted a comprehensive search of the Web of Science Core Collection database on November 29, 2023, and identified the top 100 articles by ranking them from highest to lowest citation frequency. In addition, we analyzed the year of publication, citation, author, country, institution, journal, and keywords with Microsoft Excel 2019 and VOSviewer 1.6.18. Research focused on vaccine immunogenicity and safety, vaccine hesitancy, and vaccination intention.

Unethical pro-organizational behavior is one of the core factors that affect organizational development. Although enterprises and researchers have done a lot of work, a quantitative and systematic assessment of unethical pro-organizational behavior research is still lacking, this review conducts a bibliometric analysis to describe the characteristics and trends of unethical pro-organizational behavior research in business and management, such as publication trend analysis, co-citation analysis, keywords co-occurrence analysis, and citation burst analysis. The results show that 89 articles and 4,523 references from 49 journals contributed by 254 authors are identified. The number of publications has increased significantly since 2019. The China and United States are the most productive country. Umphress E and Yam C are the most influential authors. "Journal of Business Ethics and Frontiers in Psychology" are the most influential journal, 26 words in 516 keywords constitute the strongest set of terms available, Keyword co-occurrence analysis found ethical decision-making, the measurement, and impact of unethical pro-organizational behavior, the antecedents of ethical leadership are worthy and prospective potential trends. These findings provide a systematically, transparently, and visually reviewed the landscape and development process of unethical pro-organizational behavior research, which may help researchers and practitioners to understand unethical pro-organizational behavior in business management and provide a new perspective for future research.

Coronaviruses (CoV) cause respiratory and intestinal infections. We conducted this bibliometric analysis and systematical review to explore the CoV-related research trends from before COVID-19. We systematically searched the Ovid MEDLINE, Ovid Embase, and Web of Science (WOS) databases for published bibliometric analyses of CoV from database inception to January 24, 2021. The WOS Collection was searched from inception to January 31, 2020, to acquire the CoV-related publications before COVID-19. One-Way ANOVA and Bonferroni multiple-comparison tests were used to compare differences. Visualization mapping and keyword cluster graphs were made to illustrate the research topics and hotpots. We included 14,141 CoV-related publications for the bibliometric analysis and 16 (12 articles) CoV-related bibliometric analyses for the systematic review. Both the systematic review and bibliometric analysis showed (1) the number of publications showed two steep upward trajectories in 2003–2004 and in 2012–2014; (2) the research hotpots mainly focused on the mechanism, pathology, epidemiology, clinical diagnosis, and treatment of the coronavirus in MERS-CoV and SARS-Cov; (3) the USA, and China; the University of Hong Kong; and Yuen KY, came from the University of Hong Kong contributed most; (4) the Journal of Virology had the largest number of CoV related studies. More studies should focus on prevention, diagnosis, and treatment in the future.