BMC Infectious Diseases BioMed Central Correspondence Open Access Mapping the history and current situation of research on John Cunningham virus – a bibliometric analysis Hua-chuan Zheng*1, Lei Yan2, Lei Cui2, Yi-fu Guan1 and Yasuo Takano3 Address: 1Department of Biochemistry and Molecular Biology, College of Basic Medicine, China Medical University, Shenyang, PR China, 2Department of Medical Informatics and Information System, China Medical University, Shenyang, PR China and 3Department of Diagnostic Pathology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan Email: Hua-chuan Zheng* -
[email protected]; Lei Yan -
[email protected]; Lei Cui -
[email protected]; Yi- fu Guan -
[email protected]; Yasuo Takano -
[email protected] * Corresponding author Published: 11 March 2009 Received: 1 July 2008 Accepted: 11 March 2009 BMC Infectious Diseases 2009, 9:28 doi:10.1186/1471-2334-9-28 This article is available from: http://www.biomedcentral.com/1471-2334/9/28 © 2009 Zheng et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: John Cunningham virus (JCV) constitutes a family of polyoma viruses, which plays important roles in the progressive multifocal leukoencephalopathy (PML) and tumorigenesis. However, no bibliometric investigation has been reported to guide the researchers and potential readers. Methods: Papers were collected from database Sci-expanded and Pubmed until May 22, 2008. The highly-productive authors, institutes and countries, highly-cited authors and journals were ranked.