Hot papers in microbiology, 2006-2008

	Paper Author(s), Journal	Citations
1	An obesity-associated gut microbiome with increased capacity for energy harvest P.%u2009J. Turnbaugh, R.%u2009E. Ley, M.%u2009A. Mahowald et al Nature 444 (7122): 10-1031, 21 December 2006	156
2	Epidemiology of invasive candidiasis: A persistent public health problem M.%u2009A. Pfaller and D.%u2009J. Diekema Clinical Microbiology Review 20 (1): 133ff, January 2007	115
3	Claudin-1 is a hepatitis C virus co-receptor required for a late step in entry M.%u2009J. Evans, T. Von Hahn, D.%u2009M. Tscherne et al Nature 446 (7137): 801-805, 12 April 2007	72
4	Identification of a third human polyomavirus T. Allander, K. Andreasson, S. Gupta et al Journal of Virology 81 (8): 4130-4136, April 2007	55
5	Identification of a novel polyomavirus from patients with acute respiratory tract infections A.%u2009M. Gaynor, M.%u2009D. Nissen, D.%u2009M. Whiley et al PLoS Pathology 3 (5): art.-e64, May 2007	46

The data above were extracted from Thomson Reuters’ Essential Science Indicators database. This database, currently covering the period January 1998 to October 2008, surveys only journal articles (original research reports and review articles) indexed by Thomson Reuters. Articles are assigned to a category based on the journals in which they were published and Thomson Reuters’ journal-to-category field-definition scheme. Hot papers are limited to those articles published in the past two years and selected if they meet a citation frequency threshold determined by field and bimonthly group. Citation frequency distributions are compiled for each field and cohort. Thresholds are set by finding the closest citation count that would select the top fraction of papers in each field and period, set to retrieve about 0.1 per cent of papers. See http://scientific.thomsonreuters.com/products/esi.