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Wilcox, M. H.; Shetty, N.; Fawley, W. N.; Shemko, M.; Coen, P.; Birtles, A.; Cairns, M.; Curran, M. D.; Dodgson, K. J.; Green, S. M.; Hardy, K. J.; Hawkey, P. M.; Magee, J. G.; Sails, A. D.; Wren, M. W. D.
Clinical infectious diseases, 10/2012, Letnik: 55, Številka: 8Journal Article
Background. Marked increases in Clostridium difficile infection (CDI) incidence, driven by epidemic strain spread, is a global phenomenon. Methods. The Clostridium difficile Ribotyping Network (CDRN) was established in 2007 as part of enhanced CDI surveillance in England, to facilitate the recognition and control of epidemic strains. We report on changes in CDI epidemiology in England in the first 3 years of CDRN. Results. CDRN received 12 603 fecal specimens, comprising significantly (P < .05) increasing numbers and proportions of national CDI cases in 2007–2008 (n = 2109, 3.8%), 2008–2009 (n = 4774, 13.2%), and 2009–2010 (n = 5720, 22.3%). The C. difficile recovery rate was 90%, yielding 11 294 isolates for ribotyping. Rates of 9 of the 10 most common ribotypes changed significantly (P < .05) during 2007–2010. Clostridium difficile ribotype 027 predominated, but decreased markedly from 55% to 36% and 21% in 2007–2008, 2008–2009, and 2009–2010, respectively. The largest regional variations in prevalence occurred for ribotypes 027, 002, 015, and 078. Cephalosporin and fluoroquinolone use in CDI cases was reported significantly (P < .05) less frequently during 2007–2010. Mortality data were subject to potential reporting bias, but there was a significant decrease in CDI-associated deaths during 2007–2010, which may have been due to multiple factors, including reduced prevalence of ribotype 027. Conclusions. Access to C. difficile ribotyping was associated with significant changes in the prevalence of epidemic strains, especially ribotype 027. These changes coincided with markedly reduced CDI incidence and related mortality in England. CDI control programs should include prospective access to C. difficile typing and analysis of risk factors for CDI and outcomes.
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