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c. diff 027

James A Karlowsky, Heather J Adam, Tyler Kosowan, Melanie R Baxter, Kim A Nichol, Nancy M Laing, George Golding, George G Zhanel
Clostridium difficile toxin-positive diarrheal stool specimens submitted to eight Canadian hospital laboratories from 2013 to 2015 were cultured. Polymerase chain reaction ribotyping of isolates was performed using an internationally standardized, high-resolution capillary gel-based electrophoresis protocol and antimicrobial susceptibility testing conducted by CLSI-defined agar dilution (M11-A8, 2012). Among the 1310 isolates of C. difficile cultured, 141 different ribotypes were identified; the most common ribotypes were 027 (24...
January 31, 2018: Diagnostic Microbiology and Infectious Disease
Fiona Senchyna, Rajiv L Gaur, Saurabh Gombar, Cynthia Y Truong, Lee F Schroeder, Niaz Banaei
There is no stand-alone Clostridium difficile diagnostic that can sensitively and rapidly detect fecal free toxins. We investigated the performance of the C. difficile PCR cycle threshold (CT ) for predicting free toxin status. Consecutive stool samples (n = 312) positive for toxigenic C. difficile by the GeneXpert C. difficile/Epi tcdB PCR assay were tested with the rapid membrane C. Diff Quik Chek Complete immunoassay (RMEIA). RMEIA toxin-negative samples were tested with the cell cytotoxicity neutralization assay (CCNA) and tgcBIOMICS enzyme-linked immunosorbent assay (ELISA)...
September 2017: Journal of Clinical Microbiology
Olivia Zaegel-Faucher, Sylvie Bregigeon, Carla Eliana Cano, Véronique Obry-Roguet, Corinne Nicolino-Brunet, Catherine Tamalet, Françoise Dignat-George, Isabelle Poizot-Martin
OBJECTIVE: The objective of this study is to evaluate the impact of hepatitis C virus (HCV) serostatus on the evolution of CD8 cells and CD4 : CD8 ratio in HIV-infected patients on combined antiretroviral therapy (cART) who achieve sustained undetectable viral load (HIV-pVL). DESIGN AND METHODS: A longitudinal study performed in an outpatient HIV-unit following 1495 HIV-infected patients. Data of patients on cART achieving undetectable HIV-pVL for at least 3 years were collected retrospectively from our medical e-database NADIS from January 1997 to April 2005, a period defined in order to select patients who were naive of hepatitis treatment...
July 31, 2015: AIDS
L Bareková, E Zálabská, I Hanovcová
BACKGROUND: Clostridium difficile is currently a significant cause of nosocomial diarrhea. For several years, the number of infectious cases in the community has also been increasing. Since the beginning of 2010, quite a large increase in the number of Clostridium difficile infections (CDIs) has been noted in Pardubice Regional Hospital (PRH). The objectives of this study were to describe and evaluate the methods used in the laboratory diagnosis of CDIs in PRH, and to describe the laboratory diagnostic algorithm used here...
September 2013: Klinická Mikrobiologie a Infekc̆ní Lékar̆ství
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