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Molecular surveillance of pathogens has shown the need for rapid and dependable methods for the detection and identification of organisms of clinical and epidemiologic importance. Staphylococcus aureus, one of the most frequent causes of human infections, was used as a model organism to develop and refine a real-time fluorescence PCR assay and enhanced DNA(More)
BACKGROUND We describe the diversity of two kinds of mycobacteria isolates, environmental mycobacteria and Mycobacterium bovis collected from wild boar, fallow deer, red deer and cattle in Doñana National Park (DNP, Spain), analyzing their association with temporal, spatial and environmental factors. RESULTS High diversity of environmental mycobacteria(More)
OBJECTIVE To describe what is, to our knowledge, the first nosocomial outbreak of infection with pan-drug-resistant (including colistin-resistant) Acinetobacter baumannii, to determine the risk factors associated with these types of infections, and to determine their clinical impact. DESIGN Nested case-control cohort study and a clinical-microbiological(More)
INTRODUCTION The SMART (Study for Monitoring Antimicrobial Resistance Trends) surveillance study records the antimicrobial susceptibility of Gram-negative bacilli obtain from intraabdominal infections with special focus in isolates with extended spectrum β-lactamases (ESBLs). MATERIAL AND METHODS The antimicrobial susceptibility of 8,869 isolates was(More)
Our objective was to evaluate the feasibility of a molecular assay based on a real-time PCR technique, carried out with a LightCycler instrument (Roche Biochemicals), to identify Mycobacterium tuberculosis bacilli and to detect rifampin and isoniazid resistance in DNA extracts from sputum samples. We studied three genes: rpoB, which is associated with(More)
In this study we designed two pairs of probes for the detection of rifampin and isoniazid resistance in Mycobacterium tuberculosis with real-time PCR procedures. One pair of probes spans the region between codon 510 and 528 of the rpoB gene, and the other one screens for mutation at the regulatory region of the inhA gene. We have evaluated these probes in(More)
OBJECTIVE To analyze the prevalence of past and recent infections by West Nile virus (WNV) and the risk factors associated with WNV exposure in a representative population from southern Spain. METHODS Sample size was established for an estimated prevalence of past WNV infections of 5 +/- 2.5% in 504 subjects. A pre-stratification was performed according(More)
OBJECTIVE The aim of this study is to develop a pharmacokinetic-pharmacodynamic (PK-PD) rifampin breakpoint for Acinetobacter baumannii based on Monte Carlo simulation and to compare it with the reference value establish by the French Society for Microbiology (SFM). METHODS A 10,000 subject's Monte Carlo simulation for rifampin with intravenous dose of 10(More)
OBJECTIVE The objective of the study is to evaluate the ability of standard vancomycin dosing strategies actually recommended to attain the pharmacodynamic target of an area under the curve of vancomycin serum concentration versus time from 0 to 24 hours (AUC(24h)) to minimum inhibitory concentration (MIC) ratio greater than 400:1 for patients with a(More)