Clostridium difficile Mixed Infection and Reinfection

Author:

Eyre David W.1,Walker A. Sarah12,Griffiths David1,Wilcox Mark H.34,Wyllie David H.1,Dingle Kate E.1,Crook Derrick W.1,Peto Tim E. A.1

Affiliation:

1. NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, United Kingdom

2. MRC Clinical Trials Unit, London, United Kingdom

3. Department of Microbiology, The General Infirmary, Old Medical School, Leeds, United Kingdom

4. Leeds Institute of Molecular Medicine, University of Leeds, Leeds, United Kingdom

Abstract

ABSTRACTIsolates from consecutiveClostridium difficileinfection (CDI) fecal samples underwent multilocus sequence typing. Potential reinfections with different genotypes were identified in 88/560 (16%) sample pairs taken 1 to 1,414 days (median, 24; interquartile range [IQR], 1 to 52 days) apart; odds of reinfection increased by 58% for every doubling of time between samples. Of 109 sample pairs taken on the same day, 3 (3%) had different genotypes. Considering samples 0 to 7 days apart as the same CDI, 7% of cases had mixed infections with >1 genotype.

Publisher

American Society for Microbiology

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