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European Journal of Clinical Microbiology & Infectious Diseases

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https://www.readbyqxmd.com/read/27896497/the-slippery-difficulty-of-ever-containing-drug-resistance-with-current-practices
#1
REVIEW
R Fullybright
It has previously been shown that the rate of drug resistance emergence in medicine is exponential, while we have been producing drugs at a much lower rate. Our ability to successfully contain resistance at any one time is function of how many drugs we have at our disposal to counter new resistances from pathogens. Here, we assess our level of preparedness through a mathematical comparison of the drug manufacture rate by the pharmaceutical industry with the resistance emergence rate in pathogens. To that effect, changes in the rates of growth of the drugs production and resistance emergence processes are computed over multiple time segments and compared...
November 28, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27896496/dalbavancin-reduces-biofilms-of-methicillin-resistant-staphylococcus-aureus-mrsa-and-methicillin-resistant-staphylococcus-epidermidis-mrse
#2
D Knafl, S Tobudic, S C Cheng, D R Bellamy, F Thalhammer
Activity of dalbavancin against methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant Staphylococcus epidermidis (MRSE) in biofilm was investigated and the microbicidal biofilm concentrations (MBC) were determined. Biofilms obtained from ten MRSA and ten MRSE bloodstream isolates, collected from patients in the General Hospital of Vienna between 2012 and 2015, were incubated with dalbavancin in trypticase soy broth (TSB) in serial dilution from 0.0625 mg/l to 256 mg/l using a microtiter plate biofilm model...
November 28, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27889879/plasmid-mediated-quinolone-resistance-in-enterobacteriaceae-a-systematic-review-with-a-focus-on-mediterranean-countries
#3
REVIEW
B Yanat, J-M Rodríguez-Martínez, A Touati
Quinolones are a family of synthetic broad-spectrum antimicrobial drugs. These molecules have been widely prescribed to treat various infectious diseases and have been classified into several generations based on their spectrum of activity. Quinolones inhibit bacterial DNA synthesis by interfering with the action of DNA gyrase and topoisomerase IV. Mutations in the genes encoding these targets are the most common mechanisms of high-level fluoroquinolone resistance. Moreover, three mechanisms for plasmid-mediated quinolone resistance (PMQR) have been discovered since 1998 and include Qnr proteins, the aminoglycoside acetyltransferase AAC(6')-Ib-cr, and plasmid-mediated efflux pumps QepA and OqxAB...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27889878/same-day-identification-and-antibiotic-susceptibility-testing-on-positive-blood-cultures-a-simple-and-inexpensive-procedure
#4
K Maelegheer, E Nulens
Fast diagnostic tools are becoming a hot topic in microbiology, especially in the case of septic patients. Therefore, we attempted to develop a fast, inexpensive, accurate and easy method to identify bacteria and perform an antibiotic susceptibility test directly on positive blood cultures that could be used in a routine laboratory. A procedure based on centrifugation and washing steps was performed on 110 non-duplicated (including nine seeded) positive blood culture bottles. Direct identification (DID) and antimicrobial susceptibility testing (AST) was conducted on the pellet with the MALDI Biotyper and Phoenix, respectively...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27889877/maldi-tof-ms-meets-wgs-in-a-vre-outbreak-investigation
#5
S Schlebusch, G R Price, R L Gallagher, V Horton-Szar, L D H Elbourne, P Griffin, D J Venter, S O Jensen, S J Van Hal
The use of MALDI-TOF MS (matrix-assisted laser desorption/ ionization-time of flight mass spectrometry) and WGS (whole genome sequencing) has been described for identification and strain relatedness determination. We describe the complementary use of MALDI-TOF MS and WGS in a VRE (vancomycin-resistant enterococci) outbreak investigation, and discuss some of the challenges with defining strain similarity across these two platforms. Although both assays indicated multiple clusters involved in the outbreak of vancomycin resistant Enterococcus faecium isolates from positive blood cultures of four haematology-oncology patients, the small cohort and discrepancies between findings indicate the limitations of MALDI-TOF MS and the cautious interpretation of MALDI-TOF MS dendrograms during outbreaks...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27888403/the-predictor-of-mortality-outcome-in-adult-patients-with-ebola-virus-disease-during-the-2014-2015-outbreak-in-guinea
#6
M S Cherif, N Koonrungsesomboon, M P Diallo, E Le Gall, D Kassé, F Cherif, A Koné, M Diakité, F Camara, N Magassouba
The purpose of this study was to examine the association of any demographic and clinical factors with mortality outcome among adult patients with Ebola virus disease (EVD) in Guinea. This retrospective observational study analyzed medical records of laboratory confirmed EVD adult patients during the 2014-2015 EVD outbreak in Guinea. The associations between any demographic or clinical variables and mortality outcome of EVD were assessed using univariate and multivariate logistic regression analyses. Of 2,310 EVD adult patients included for analysis, the overall case fatality rate was 68...
November 25, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27888402/infectious-encephalitis-utility-of-a-rational-approach-to-aetiological-diagnosis-in-daily-clinical-practice
#7
C López-Sánchez, E Sulleiro, C Bocanegra, S Romero, G Codina, I Sanz, J Esperalba, J Serra, C Pigrau, J Burgos, B Almirante, V Falcó
In this study we attempt to assess the utility of a simplified step-wise diagnostic algorithm to determinate the aetiology of encephalitis in daily clinical practice and to describe the main causes in our setting. This was a prospective cohort study of all consecutive cases of encephalitis in adult patients diagnosed between January 2010 and March 2015 at the University Hospital Vall d'Hebron in Barcelona, Spain. The aetiological study was carried out following the proposed step-wise algorithm. The proportion of aetiological diagnoses achieved in each step was analysed...
November 25, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27888401/the-impact-of-chronic-hepatitis-c-infection-on-cholesterol-metabolism-in-pbmcs-is-associated-with-microrna-146a-expression
#8
M Sidorkiewicz, M Grek, B Jozwiak, A Krol, A Piekarska
Chronic hepatitis C (CHC) infection is known to induce important changes in host cholesterol metabolism. MicroRNAs (miRNAs) regulate the expression of many genes and, in consequence, control various processes, including human metabolism and response to viral infection. Recently, the alteration of the immune-associated miR-146a, which is abundantly present in peripheral blood mononuclear cells (PBMCs), was found in some viral infections. The study aimed to analyse the influence of hepatitis C virus (HCV) infection on miR-146a expression in PBMCs in vivo and in vitro, as well as to assess the possible impact of miR-146a alteration on the intracellular cholesterol level in PBMCs...
November 25, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27885442/patterns-and-trends-of-pediatric-bloodstream-infections-a-7-year-surveillance-study
#9
N Buetti, A Atkinson, L Kottanattu, J Bielicki, J Marschall, A Kronenberg
We characterize the epidemiology of pediatric bloodstream infections (BSIs) in Switzerland. We analyzed pathogen distribution and resistance patterns in monomicrobial and polymicrobial BSIs in children from 2008 to 2014 using data from the Swiss antibiotic resistance centre (ANRESIS). A confirmatory statistical analysis was performed comparing pathogens and resistance across 20 acute care hospitals. We identified 3,067 bacteremia episodes, of which 1,823 (59 %) were considered true BSI episodes. Overall, S...
November 24, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27873028/mcr-modern-colistin-resistance
#10
REVIEW
I Caniaux, A van Belkum, G Zambardi, L Poirel, M F Gros
Recently, plasmid-mediated and, therefore, transferable bacterial polymyxin resistance was discovered in strains from both humans and animals. Such a trait may widely spread geographically, while simultaneously crossing microbial species barriers. This may ultimately render the "last resort" polymyxin antibiotics therapeutically useless. Colistin is currently used to treat infections caused by Gram-negative carbapenemase producers and colistin resistance may lead to practical pan-antibiotic resistance. We here analyzed the medical and diagnostic consequences of (emerging) colistin resistance and propose pathways toward adequate diagnostics for timely detection of both asymptomatic carriage and infection...
November 21, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27864622/how-obesity-impacts-outcomes-of-infectious-diseases
#11
A Atamna, A Elis, E Gilady, L Gitter-Azulay, J Bishara
Obesity is associated with co-morbidities and increased risk of acquiring infections with worse outcomes. Paradoxically, a few studies indicate that obesity may have a decreased mortality in hospitalized patients with pneumonia. The objective of this study was to determine the impact of body mass index (BMI) on short-term all-cause mortality and clinical outcomes among hospitalized adults with pneumonia, urinary tract infections, skin and soft tissue infections, and bacteremia. The study cohort included 1437 consecutive patients who were admitted with infectious disease including pneumonia (717), urinary tract infection (506), bacteremia (69), and skin and soft tissue infections (145), and hospitalized in internal medical departments, during 2013-2015...
November 18, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27858243/the-value-of-specialist-care-infectious-disease-specialist-referrals-why-and-for-whom-a-retrospective-cohort-study-in-a-french-tertiary-hospital
#12
M Sasikumar, S Boyer, A Remacle-Bonnet, B Ventelou, P Brouqui
This study evaluated the impact of infectious disease (ID) specialist referrals on outcomes in a tertiary hospital in France. This study tackled methodological constraints (selection bias, endogeneity) using instrumental variables (IV) methods in order to obtain a quasi-experimental design. In addition, we investigated whether certain characteristics of patients have a bearing on the impact of the intervention. We used the payments database and ID department files to obtain data for adults admitted with an ID diagnosis in the North Hospital, Marseille from 2012 to 2014...
November 17, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27858242/epidemiology-and-reporting-of-candidaemia-in-belgium-a-multi-centre-study
#13
C Trouvé, S Blot, M-P Hayette, S Jonckheere, S Patteet, H Rodriguez-Villalobos, F Symoens, E Van Wijngaerden, K Lagrou
The primary aim of this study was to collect national epidemiological data on candidaemia and to determine the reporting time of species identification and antifungal susceptibility in clinical practice. During a 1-year period (March 2013 until February 2014), every first Candida isolate from each episode of candidaemia was included prospectively from 30 Belgian hospitals. Identification and susceptibility testing were performed according to local procedures and isolates were sent to the National Reference Center for Mycosis...
November 17, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27848039/antiviral-susceptibility-profile-of-influenza-a-viruses-keep-an-eye-on-immunocompromised-patients-under-prolonged-treatment
#14
A Kossyvakis, A-F A Mentis, K Tryfinopoulou, V Pogka, A Kalliaropoulos, E Antalis, T Lytras, A Meijer, S Tsiodras, P Karakitsos, A F Mentis
There was an increase in severe and fatal influenza cases in Greece during the 2011-2015 post-pandemic period. To investigate causality, we determined neuraminidase (NA) inhibitor susceptibility and resistance-conferring NA and hemagglutinin (HA) mutations in circulating influenza type A viruses during the pandemic (2009-2010) and post-pandemic periods in Greece. One hundred thirty-four influenza A(H1N1)pdm09 and 95 influenza A(H3N2) viruses submitted to the National Influenza Reference Laboratory of Southern Greece were tested for susceptibility to oseltamivir and zanamivir...
November 15, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27844263/the-resident-microflora-of-voided-midstream-urine-of-healthy-controls-standard-versus-expanded-urine-culture-protocols
#15
L Coorevits, S Heytens, J Boelens, G Claeys
The workup and interpretation of urine cultures is not always clear-cut, especially for midstream samples contaminated with commensals. Standard urine culture (SUC) protocols are designed in favor of growth of uropathogens at the expense of commensals. In selected clinical situations, however, it is essential to trace fastidious or new uropathogens by expanding the urine culture conditions (EUC). The aim of our study was to map the microflora in midstream urine specimens from healthy controls by means of EUC, in view of the interpretation of bacterial culture results in symptomatic patients...
November 14, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27844262/changes-in-the-pneumococcal-disease-related-hospitalisations-in-spain-after-the-replacement-of-7-valent-by-13-valent-conjugate-vaccine
#16
L Georgalis, A Mozalevskis, M V Martínez de Aragón, M Garrido-Estepa
In Spain, anti-pneumococcal vaccination is recommended for all children under 2 years old, high-risk groups and adults ≥65 years old. However, it is not funded in most autonomous communities. This study aims to compare pneumococcal disease hospitalisation rates between Period 1 (2007-2009), when 7-valent (PCV7) vaccine was available, and Period 2 (2011-2013), after the change to 13-valent (PCV13) vaccine in Spain. Data on hospitalisations were obtained from the National Registry of Hospitalisations. We calculated hospitalisation rates (HRs) and hospitalisation rate ratios (HRRs) among periods by age group and autonomous community, for all and by clinical presentation...
November 14, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27838792/influenza-virus-infections-in-patients-with-malignancies-characteristics-and-outcome-of-the-season-2014-15-a-survey-conducted-by-the-infectious-diseases-working-party-agiho-of-the-german-society-of-haematology-and-medical-oncology-dgho
#17
B Hermann, N Lehners, M Brodhun, K Boden, A Hochhaus, M Kochanek, K Meckel, K Mayer, T Rachow, C Rieger, E Schalk, T Weber, A Schmeier-Jürchott, P Schlattmann, D Teschner, M von Lilienfeld-Toal
Influenza virus infections (IVI) may pose a vital threat to immunocompromised patients such as those suffering from malignancies, but specific data on epidemiology and outcome in these patients are scarce. In this study, we collected data on patients with active cancer or with a history of cancer, presenting with documented IVI in eight centres in Germany. Two hundred and three patients were identified, suffering from haematological malignancies or solid tumours; 109 (54 %) patients had active malignant disease...
November 12, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27837326/increased-risk-of-chronic-osteomyelitis-after-hip-replacement-a-retrospective-population-based-cohort-study-in-an-asian-population
#18
D-Z Hung, N Tien, C-L Lin, Y-R Lee, C C N Wang, J-J Chen, Y-P Lim
The correlation between hip replacement (Hip-Repl) and chronic osteomyelitis (COM) has not been studied in Asian populations. Thus, we assessed Hip-Repl-related risk of developing COM via a population-based, nationwide, retrospective cohort study. The Hip-Repl cohort was obtained from Taiwan's Longitudinal Health Insurance Database 2000, and included patients who underwent Hip-Repl between 2000 and 2010; the control cohort was also selected from this database. Patients with a history of COM were excluded in both cohorts...
November 11, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27837325/reduced-length-of-hospital-stay-through-a-point-of-care-placed-automated-blood-culture-instrument
#19
M J Bruins, M J Egbers, T M Israel, S H A Diepeveen, M J H M Wolfhagen
Early appropriate antimicrobial treatment of patients with sepsis has a large impact on clinical outcome. To enable prompt and efficient processing of blood cultures, the inoculated vials should be placed into an automated continuously monitoring blood culture system immediately after sampling. We placed an extra BACTEC FX instrument at the emergency department of our hospital and validated the twice-daily re-entering of ongoing vials from this instrument into the BACTEC FX at the laboratory. We subsequently assessed the benefits of shortening the transport time between sampling and monitored incubation of blood culture vials by comparing the turnaround times of positive blood cultures from emergency department patients with a historical control group...
November 11, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27832392/epidemiology-and-mortality-of-candidemia-both-related-and-unrelated-to-the-central-venous-catheter-a-retrospective-cohort-study
#20
S Arias, O Denis, I Montesinos, S Cherifi, V Y Miendje Deyi, F Zech
Our objective was to compare mortality, epidemiology, and morbidity in hospitalized patients with candidemia which was both related and unrelated to the central venous catheter (CVC). This was a monocentric, retrospective cohort study of candidemia. The sample consisted of 103 patients with laboratory-confirmed nosocomial candidemia hospitalized between 2006 and 2013 in a tertiary care public hospital. We included 65 (63.1 %) patients (24 in the CVC-positive group, 41 in the CVC-negative group). Demographic data and risk factors were recorded using a structured case report form...
November 10, 2016: European Journal of Clinical Microbiology & Infectious Diseases
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