year 14, Issue 3 (May - Jun 2020)                   Iran J Med Microbiol 2020, 14(3): 252-269 | Back to browse issues page

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Danesh F, Ghavidel S, Emami M. Acinetobacter baumannii: Researchers' Scientific Cooperation Network in Three Decades. Iran J Med Microbiol 2020; 14 (3) :252-269
1- Information Management Research Department, Regional Information Center for Science and Technology (RICeST), Shiraz, Iran ,
2- Department of knowledge and Information Science, School of Psychology and Educational Sciences, Kharazmi University, Tehran, Iran
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Acinetobacter baumannii is one of the most common and effective pathogens in causing serious ICU infections in modern hospital systems around the world (1- 5). This hospital pathogen has caused a wide range of infections, including Septicemia and Pneumonia, and has become a significant challenge in health care services, especially hospitals (3,6-8). A. baumannii researchers and specialists have always conducted extensive research in various fields due to the challenges, crises, and global impact of this pathogen.
Co-citation analysis is one of the scientometric techniques that is used as a method in analyzing the intellectual structure of scientists and their publications and identifying principal authors and publications in different areas of research (15,14). Due to the importance of the scientometrics study of A. baumannii's international publications, the main issue of this article is to visualize the scientific collaboration network and the citations of A. baumannii's researchers using the methods of co-citation analysis and social network analysis from 1990 to 2019. Conducting such research and its practical results will be of great help to researchers and planners of the healthcare system in the field of strategic and heuristic planning, as well as the implementation of programs at the level of medical sciences organizations and countries (20).
Therefore, it seems necessary to conduct practical, comprehensive, and analytical research in this regard. Visualizing the researchers of A. Baumannii's scientific collaboration network is the primary goal of this study.


Materials and Methods

The method used in this paper is co-citation analysis. The statistical population is all A. Baumannii indexed publications from 1990 to 2019 in the Web of Science Core Collection (WOSCC). A total of 4473 records were retrieved after an advanced search for "A. Baumannii" with the "TI" tag using Ravar PreMap, UCINET 6.528.0.0, and Netdraw for preprocessing and analyzing the data .(18)


The Growth Trend of Acinetobacter baumannii Publications
A. baumannii's number of Publications rose from 2 in 1990 to 475 in 2019. The data in Figure 1 showed that A. baumannii's publication trend has been growing in the last three decades.

Ranking of Acinetobacter baumannii's Top Journals Based on IF
The data in Table 1 showed that the best journal is "Clinical Infectious Diseases," with an impact factor of 9.05.

The Most Effective Acinetobacter baumannii Researchers
With 4365 citations, "Seifert, Harald" from Germany and affiliated with University Hospital of Cologne, ranked first among the most effective researchers in the A. Baumannii research domain (Table 2).

Figure 1. The growth trend of Acinetobacter baumannii's publication in WOSCC (1990 to 2019)
Figure 1. The growth trend of Acinetobacter baumannii's publication in WOSCC (1990 to 2019)
 Table 1. Top Acinetobacter baumannii's journals in WOSCC (1990-2019) Based on Impact Factor
Citations Self- Citation Impact Factor Quartile Publisher Country No. of articles published No of Highly cited papers Journal Rank
4587 47 9.05 Q1 Oxford University UK 42 1 Clinical Infectious Diseases 1
4162 119 6.42 Q1 Elsevier 79 0 Clinical Microbiology and Infection 2
8068 272 5.11 Q1 Oxford University 160 6 Journal of Antimicrobial Chemotherapy 3
7173 267 4.95 Q1 American Society for Microbiology USA 111 0 Journal of Clinical Microbiology 4
16227 1106 4.71 Q1 American Society for Microbiology 337 6 Antimicrobial Agents and Chemotherapy 5
Table 2. Effective researchers of Acinetobacter baumannii in WOSCC (1990 - 2019)
Citation Record H-index Self- Citation Highly cited papers Affiliation Country Author Rank
4365 50 24 168 2 University Hospital  Cologne Germany Seifert, Harald 1
3021 71 27 150 2 Case Western Reserve University USA Bonomo, Robert A 2
2791 15 12 23 1 University of Queensland Australia Paterson, David L 3
2694 20 14 42 0 Monash University Australia Peleg, Anton Y 4
2449 37 26 93 1 University of Fribourg Switzerland Nordmann, patrice 5
Top co-citation pairs in Acinetobacter baumannii
"Seifert, Harald * Higgins, Paul G" are the authors who have had the most co-citation pairs in A. baumannii and ranked first place. The researchers are from Germany and have had 54 co-citation pairs in the last three decades.

Top Acinetobacter baumannii Researchers Based on Degree, Betweenness and Closeness centrality
"Beceiro, Alejandro" with 52-degree centrality, "HSU Li Yang" with 368/1734 betweenness centrality, and "Seifert, Harald" with 0.280 closeness centrality are ranked first in centrality indicators.

    Table 3. Top 10 co-citation pairs in Acinetobacter baumannii (1990-2019)

Countries of co-citation couples No. of Co-Citations co-citation pairs Rank
Germany* Germany 54 Seifert, Harald * Higgins, Paul G. 1
Switzerland* Switzerland 52 Nordmann, patrice * Poirel, Laurent 2
Australia* Australia 29 Hall, Ruth M. * Kenyon, Johanna J 3
Taiwan* Taiwan 28 Chen Te-Li * Kuo-Shu CHEN 4
Australia* Australia 27 Li Jian * Nation, Roger L. 5
USA* USA 27 Popova, Anastasiya V. * Schneider, Mikhail M. 6
Russia* Russia 27 Knirel, Yuriy A. * Shashkov Alexander S. 7
Taiwan* Taiwan 26 Chen Te-Li * Lee Yi-tzu 8
Russia* Russia 26 Popova, Anastasiya V. * Knirel, Yuriy A. 9
Russia* USA 26 Knirel, Yuriy A. * Schneider, Mikhail M. 10

Acinetobacter baumannii research network based on centrality indicators

Figure 2. Acinetobacter Baumannii research network based on degree centrality 
Figure 2. Acinetobacter Baumannii research network based on degree centrality
Figure 3. Acinetobacter Baumannii research network based on betweenness centrality
Figure 3. Acinetobacter Baumannii research network based on betweenness centrality
Figure 4. Acinetobacter Baumannii research network based on closeness centrality
Figure 4. Acinetobacter Baumannii research network based on closeness centrality



The trend of scientific publications of A. Baumannii researchers has been growing in the last three decades. The results of this part of the study are consistent with the results of research by Zeinoun (22), Liao (28), Sweileh (31). "Seifert, Harald" is the most influential researcher, and "Bonomo, Robert A" is the most proliferated one. These results are not consistent with the results of Figg (41) and Huamani (42) but are consistent with the research of Hassanzadeh et al. (30). "Seifert, Harald * Higgins, Paul G," is a co-citation pair who share common research interests.
"Beceiro, Alejandro" has more power in the knowledge flow of network and has a unique role in attracting new researchers to the scientific network (17). "HSU Li Yang," due to its central position in the network, has many relationships with other researchers and has an important strategic position in the overall structure of the collaboration network (17, 40). "Seifert, Harald," with the highest closeness centrality, is closer to other members of the network and has faster access to all researchers on the network than any other so that there can be more citations to his publications (17,39). From this perspective, the results of the present study are consistent with the research of Soheili et al. (37).



One of the most critical concepts and unique functions of social network analysis is the study of researchers' scientific collaboration network with centrality indicators that determine the importance and effectiveness of researchers and their performance in the cooperation network. Based on this, it is suggested that detailed and independent research of the Iranian A. baumannii researchers’ collaboration network be conducted.



In this regard, we appreciate the experts for their valuable comments.


Conflicts of Interest

Authors declared no conflict of interests.


Type of Study: Original Research Article | Subject: Medical Bacteriology
Received: 2020/03/14 | Accepted: 2020/05/28 | ePublished: 2020/06/18

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