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Objectives: The study makes a bibliometric evaluation of global publications on "Application of Stem Cell Therapy to Covid-19" during 2020-22. Methods: The published publications on this theme were searched, retrieved, and downloaded from the Elsevier's Scopus international database and analyzed using bibliometric techniques based on select bibliometric indicators. The VOSviewer software and Biblioshiny application were used to construct and visualize bibliometric networks. Results: In all 1413 publications were indexed on "Application of Stem Cell Therapy to Covid-19" in the Scopus database till 30 December 2021. These publications registered an average of 18.03 citations per paper. Of these, the funded publications were 452(31.99%). In all, 91 countries, 690 organizations, and 1068 authors participated in global research and published in 317 journals. Among participating countries, China, the U.K., Italy, and India lead in publications output (with 185, 148, 127, and 110 papers) and China (58.38 and 3.24), France (47.0 and 2.61), Netherlands (46.63 and 2.59) and the U.K. (41.84 and 2.32) leads in citation impact. Among participating organizations, Tehran University of Medical Sciences, Iran (37 papers), Harvard Medical School, USA (36 papers), Memorial Sloan Kettering Cancer Center, USA (29 papers) and Shahid Beheshti University of Medical Sciences, Iran (26 papers) leads in publications productivity (with 37, 36, 29 and 26 papers) and Brigham and Women's Hospital, USA (110.78 and 6.14), Massachusetts General Hospital, USA (81.35 and 4.51), Icahn School of Medicine at Mount Sinai, USA (78.95 and 4.38) and Harvard Medical School, USA (75.42 and 4.18) leads in citation impact. Among participating authors, K.K.Sahu (9 papers), J. Cerny (7 papers), M.A. Perales and M.Z. Ratajzak (7 papers each) leads in publication productivity and M. Mohty (37.0 and 2.05), P.R.M. Rocco (35.8 and 1.99), D.J. Weiss (33.5 and 1.86) and M.A. Perales (32.86 and 1.82) leads in citation impact. Stem Cell Reviews and Reports (35 papers), Frontiers in Immunology (32 papers), Bone Marrow Transplantation (30 papers) leads in publication productivity and Journal of Medical Virology (132.10), American Journal of Hematology (75.20), Aging and Disease (55.46) and Cell Stem Cell (33.14) leads in citation impact. Conclusion: The research is mainly dominated by North America and Western Europe, but with some contribution from China, India, Iran, and Brazil playing also an important role. The developing countries need to prioritize their research in this area and increase their collaboration with North America and Western Europe countries. The analysis will help scholars and policy-makers to take stock of the present situation and decide the future course of action on the "Application of Stem Cells in Covid-19". [ABSTRACT FROM AUTHOR]

The study aims to evaluate global research output (103054 records) on coronavirus disease (COVID-19) based on quantitative and qualitative indicators. It presents a bibliometric profile of most influential countries, organizations, authors and journals and their collaborative linkages, besides identifying broad subject areas of research, most significant keywords and highly-cited papers related to COVID-19. During 2020-21, more than 150 countries participated in COVID-19 research, of which top 10 countries accounted for a 82.93% global share. The USA, China and U.K. produced the most articles (25.86%, 10.77% and 10.7% respectively). The top three organizations, namely Harvard Medical School, USA, Huazhong University of S&T, China and Tongji Medical College, China contributed 1755, 1344 and 1267 papers, respectively. The most cited organizations in COVID-19 research are: Peking Union Medical College, China (97.41 CPP), University of Hong Kong (82.17 CPP) and Renmin Hospital of Wuhan University, China (59.88 CPP). The top three most productive authors are: V. Wanitlit, E. Mahase and G. Lacobucci (with 152, 135 and 108 papers). The top three most cited authors in terms of citations per paper (CPP) are: Y. Hu (319.82), L. Liu (303.91) and J.F.W. Chan (169.55). The most productive organizations originate from most productive countries and they contribute the most collaborative papers. The top three journals, namely International Journal of Environmental Research, BMJ and PLOS One contributed 961, 854 and 781 papers, respectively. The top three journals in terms of citations per paper (CPP) are New England Journal of Medicine (122.78), The Lancet (106.3) and JAMA (75.17). The most ubiquitous topic was COVID-19 clinical studies, with maximum focus on virological aspects (9.58%), respiratory aspects (6.97%), molecular aspects (3.11%), genetic aspects (3.09%) and immunological aspects (1.3%). The results of this study should be of interest to working scientists, clinicians and policy-makers in improving their understanding of COVID-19 disease and in its management. [ABSTRACT FROM AUTHOR]