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Aim and Background: The coronavirus disease 2019 (Covid-19) virus pandemic is still ravaging the world with its ongoing resurgence and the continuous mutation, suggesting the need for continuous research on safe and effective novel vaccines. Presently several types of vaccines have been developed and emerged in the global market to control COVID-19 virus. Consequently, the knowledge and information on COVID-19 have been expanding at a high level. Researchers need to gain relevant knowledge regarding the different vaccines;however scattered information makes this process time-consuming and laborious. The present study aimed to evaluate the characteristics and trends in global COVID-19 vaccine high-cited literature using bibliometric and visualizations methods and offer some directions and suggestions for future research. Methodology: Studies published between December 2019 and 22 Nov 2022 on COVID-19 vaccines were retrieved from the Scopus database. From the 16026 studies retrieved, 406 were identified as high-cited papers (HCPs) having received 100 or more citations. From the 406 HCPs, information about publications outputs, countries, institutions, journals, keywords, and citation counts was identified. Data analysis and visualization were conducted using Microsoft Excel, VOSviewer and Bibliometrix R software. Result(s): The 406 global HCPs on COVID-19 vaccines research were identified in Scopus database since Dec 2019 till 30 Nov 2022 using a search strategy, which received 123614 citations, averaging 304.17 citations per publication (CPP). An external funding was received by 53.20% (216 publications), which were cited 76107 times (with an average of 352.35 CPP). The 7086 authors from 694 organizations affiliated to 76 countries and publishing in 121 journals were involved in global COVID-19 vaccine research. The most productive countries were USA (n=213), U.K (n=91), China (n=36) and Germany (n=35). The most impactful countries in terms of citations per paper (CPP) and relative citation index (RCI) were South Africa (794.68 and 2.61), Germany (507.11 and 1.67), U.K. (396.59 and 1.30) and Spain (367.5 and 1.121). The most productive organizations were University of Oxford, U.K., Imperial College London, U.K. (n=25 each), Center for Disease Control and Prevention (CDC), USA and Tel Aviv University (n=19 each) and the most impactful organizations were University of Cambridge, U.K (783.4 and 2.57), Emory University, USA (780.1 and 2.56), John Hopkins Bloomberg School of Public Health, USA (702.67 and 2.31) and National Institute of Allergy and Infectious Diseases. USA (676.41 and 2.22). The most productive authors were A.J. Pollard (n=16) and T. Lambe (n=14) (of University of Oxford), O. Tureci and P.R. Dormitzer (n=12 each) (of BioNTechSE, Germany) and the most impactful were D. Cooper (1239.22 and 4.07), K.J. Janseu (1228.11 and 4.03) (BioNTechSE, Germany, K.A. Swanson (987.0 and 3.24) (University of Oxford, U.K.) and P.R. Dormitzer (983 and 3.23) (BioNTechSE, Germany). The most productive journals were New England Journal of Medicine (n=53), The Lancet (n=28), Nature (n=22) and JAMA (N=17). The most impactful journals (as per citations per paper) were New England Journal of Medicine (613.15), Lancet (496.39), Human Vaccines and Immunotherapeutics (369.67) and Nature (360.64). Among population age groups, the major focus was on adults (51.48%) and Middle Aged (39.16%). Among publication types, the major focus was Clinical Studies (26.85%), Epidemiology (22.66%) and Genetics (21.92%). The most significant keywords by frequency of appearances were "Covid-19" (n=388), "Covid-19 Vaccines" (n=357), "Vaccination" (n=221), "Prevention and Control" (n=181) and "Vaccine Immunogenicity" (n=133), Conclusion(s): The HCPs in COVID-19 vaccine research was done mainly by the authors and institutions of high-income Countries (HIC) and was published in high-impact medical journals. Our research has identified the leading countries, institutions, journals, hotspots and development trend in the field that could provide the foundati n for further investigations. The bibliometric analysis will help the clinicians to rapidly identify the potential collaborative partners, identify significant studies, and research topics within their domains of COVID-19 vaccines.Copyright Author (s) 2023.
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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.
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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.
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The study evaluates the global research output (820 records) on "Use of Convalescent Plasma Therapy for COVID-19" on metrics with the aim to understand the current status of research at the global, national, institutional, and individual author level. The study is based on publications and citations data sourced from the Scopus database during 2020-21. The publications and citations data was statistically analyzed on various metrics such as document type, country of publication, collaboration patterns, author affiliation, journal name, and citation patterns. The USA, China and India lead the world ranking of 15 most productive countries in the subject. China, U.K. and Netherlands lead in the ranking of most cited countries. In addition, the study maps key productive institutions, key authors, key source journals, as well as most significant keywords in the subject to visually present their inter-relationships using Biblioshiny and VOSviewer software. This results and findings from the study describe the progress made by the world in this hot area of global interest.
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Objectives: The study presents a bibliometric assessment of COVID-19 vaccine research publications to understand the current and up-to-date scenario of COVID-19 vaccine research and to track important research players and identify the current areas. Materials and Methods: The global literature on COVID-19 vaccine research published during 2020 were searched in the Scopus database, using the keywords "COVID-19 vaccine" or "Coronavirus 19 vaccine" on 12 September 2020. The 343 global records on COVID-19 vaccine research were obtained which received 2636 citations and were published in 66 countries involving 280 organizations, 259 authors and 191 journals. The publication records obtained were statistically analyzed by using various bibliometric indices: document type, country, collaboration patterns, affiliation, journal name, and citation patterns. Results:Among top 12 countries, USA, U.K and China were the most productive and China, South Korea and USA were the most impactful. Nearly 51% publications of these top 12 countries were international collaborative. The top most productive organizations were Harvard Medical School, USA (12 papers), University of Washington, Seattle, USA (10 papers) and Fudan University, China (with 12, 10 and 8 papers. Th. top most impactful organizations in terms of citation per paper and relative citation index were Tongji Medical College, China (56.0 and 7.28), Shanghai Medical College, China (33.2 and 4.32) and Chinese Center for Disease Control and Prevention, China (23.5 and 3.06). The most productive journals were Nature, Science and Vaccine (24, 18 and 18 papers each) and the most impactful journals in terms of citations per paper were: Journal of Medical Virology (66.5), Cell (27.2) and New England Journal of Medicine (23.4). Conclusion: This results and findings emerging from the study shed new light on the major progress in the present time on hot topics on COVID-19 vaccine research.
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Background: Animal studies are an indispensable part of fundamental and applied research essential for the advancement of human and veterinary health, including the current global quest for treatments and a vaccine development to combat the infectious diseases. This necessity is now clearly highlighted by the ongoing Covid-19 pandemic More recently a growing number of studies are published on this theme. Therefore, a bibliometric analysis of research on "Animal models in Covid-19" research is necessary and it is likely to focus on current status of research and indicate future direction in this study. Materials and Methods: The India's originated literature is searched on " Animal Models in Covid-19" using two set of keywords related to Covid-19 and animals in "Keyword" and "Title" (Title of articles) tags to reach the relevant publications. VOSviewer was applied to perform the bibliometric analysis of these articles. Bibliographical data obtained from above search strategy was analysed by using well-established bibliometric indices. Results: The bibliometric analysis of India's literature on the topic "Animal Models in Covid-19" research indicates that there were 2343 India's publications indexed in Scopus database during 2020-21. The topic witnessed the uneven participation of more than 160 countries, where 88.63% and more than 100.0% share of the global publications and citations share caming from top 10 countries. USA leads the ranking with global publication share of 28.16% share, followed by China (13.30%, U.K. (10.67%), Italy (9.93%). India's research output on this topic registered 7.46% share to global output. The 496 organizations and 869 authors participated in India's research on "Animal Model in Covid-19", of which the top 25 Indian organizations and 25 authors contributed 46.58% and 22.60% share to India's national publication output and 61.19% and 48.8% share to India's citation output respectively. AIIMS - New Delhi, PGIMER- Chandigarh, and IVRI-Bareilly were the most productive organizations (with 118, 115 and 68 publications). IVRI-Bareilly, PGIMER-Chandigarh and College of Veterinary Science, Mathura were the impactful organizations in terms of citation per paper and relative citation index. K. Dharma, R. Tiwari and Y.S. Malik were the most productive authors (with 63, 35 and 27 papers). H. Harapan, A.K.Singh and A Misra were the most impactful authors (with 90.42, 88.20 and 73.31 CPP).. International Journal of Research in Pharmaceutical Sciences, Indian Journal of Medical Research and Diabetes and Metabolic Syndromes. Clinical Research and Review were the most productive journals (with 72, 56 and 50 papers). Conclusion: The paper provides a understanding of the current research on animal models presently used in Covid-19 research in India, identify key players and their collaboration patterns and key sub-fields, which may be useful to practicing scholars and clinicians to advance their future research in a more effective manner and to policymakers in deciding the area of research to be funded in future.
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In this paper, we have collected the data about the 507 high-cited (citations >= 25) papers on Covid 19 published by India using Scopus database. Within small span of time many papers have received considerable number of citations. Further we have analyzed in terms of types of papers, major funding agencies, major collaborating countries, prolific authors, productive organizations and cluster analysis of author supplied keywords. Most of the papers were research articles. Department of Science and Technology, Govt. of India has funded considerable numbers of papers on Covid 19 and K. Dhama form Indian Veterinary Research Institute has contributed highest numbers papers and USA was major collaborating country and PGIMER-Chandigarh was most contributing organization. This study will be useful to the scientist/researchers to know the characteristics of high cited papers on Covid- 19 from India.