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Bloodstream infection detection

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https://www.readbyqxmd.com/read/28818544/trends-in-antimicrobial-resistance-in-bloodstream-infection-isolates-at-a-large-urban-hospital-in-malawi-1998-2016-a-surveillance-study
#1
Patrick Musicha, Jennifer E Cornick, Naor Bar-Zeev, Neil French, Clemens Masesa, Brigitte Denis, Neil Kennedy, Jane Mallewa, Melita A Gordon, Chisomo L Msefula, Robert S Heyderman, Dean B Everett, Nicholas A Feasey
BACKGROUND: Bacterial bloodstream infection is a common cause of morbidity and mortality in sub-Saharan Africa, yet few facilities are able to maintain long-term surveillance. The Malawi-Liverpool-Wellcome Trust Clinical Research Programme has done sentinel surveillance of bacteraemia since 1998. We report long-term trends in bloodstream infection and antimicrobial resistance from this surveillance. METHODS: In this surveillance study, we analysed blood cultures that were routinely taken from adult and paediatric patients with fever or suspicion of sepsis admitted to Queen Elizabeth Central Hospital, Blantyre, Malawi from 1998 to 2016...
August 14, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28813144/stimulated-raman-imaging-reveals-aberrant-lipogenesis-as-a-meta-bolic-marker-for-azole-resistant-candida-albicans
#2
Caroline W Karanja, Weili Hong, Waleed Younis, Hassan E Eldesouky, Mohamed N Seleem, Ji-Xin Cheng
Candida albicans (C. albicans) is the single most prevalent cause of fungal bloodstream infections worldwide causing significant mortality as high as fifty percent. This high mortality rate is, in part, due to the inability to initiate an effective antifungal therapy early in the disease process. Mortality rates significantly increase after twelve hours of delay in initiating the appropriate antifungal therapy following a positive blood culture. Early administration of appropriate antifungal therapy is hampered by the slow turnovers of the conventional antimicrobial testing techniques, which require days of incubation...
August 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28807291/toxocara-canis-analysis-of-the-kinetics-of-antigen-release-and-antibody-production-in-an-in-vivo-model-for-the-detection-of-past-or-present-infection
#3
Aarón Rodríguez-Caballero, Mario Noé Martínez-Gordillo, Silvia Caballero-Salazar, Yadira Rufino-González, Martha Ponce-Macotela
Worldwide, Toxocara canis is an important zoonotic nematode of public health concern. This soil-transmitted helminth causes visceral larva and ocular larva migrans in paratenic hosts. The detection of T. canis larva migrans is complicated because current immunological tests detect only IgG antibodies, which can cross-react with antigens from other parasites and cannot distinguish between the past and present infection. Analysis of antigen release and antibody production could help improve the detection of larva migrans...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28805355/sensing-mg-2-contributes-to-the-resistance-of-pseudomonas-aeruginosa-to-complement-mediated-opsonophagocytosis
#4
Mohammad Qadi, Sofía Izquierdo-Rabassa, Margalida Mateu Borrás, Antonio Doménech-Sánchez, Carlos Juan, Joanna B Goldberg, Robert E W Hancock, Sebastián Albertí
Pseudomonas aeruginosa adaptation to survive in the host hinges on its ability to probe the environment and respond appropriately. Rapid adaptation is often mediated by two-component regulatory systems, such as the PhoP/PhoQ system that responds to Mg(2+) ion concentration. However, there is limited information about the role of PhoQ in P. aeruginosa bloodstream infections. We used a murine model of systemic infection to test the virulence of a PhoQ-deficient mutant. Mutation of PhoQ impaired the virulence and the ability to cause bacteremia of P...
August 14, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28797324/novel-mcr-3-variant-encoding-mobile-colistin-resistance-in-an-st131-escherichia-coli-isolate-from-bloodstream-infection-denmark-2014
#5
Louise Roer, Frank Hansen, Marc Stegger, Ute Wolff Sönksen, Henrik Hasman, Anette M Hammerum
A novel variant of the plasmid-borne colistin resistance gene mcr-3 was detected on an IncHI2 plasmid in an ST131 CTX-M-55-producing Escherichia coli isolate from a Danish patient with bloodstream infection in 2014. The discovery of novel plasmid-borne genes conferring resistance to colistin is of special interest since colistin has reemerged as an important drug in the treatment of infections with multidrug-resistant Gram-negative bacteria.
August 3, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28777420/procalcitonin-level-as-a-surrogate-for-catheter-related-blood-stream-infection-among-hemodialysis-patients
#6
Mahmoud Hamada Imam, Eman Gamal
INTRODUCTION: Catheter-related bloodstream infection (CRBSI) is a frequent complication among hemodialysis patients who usually are presented with nonspecific signs such as fever, rigors, and hypotension. Blood culture will take up to 5 days and antimicrobials will be started. Procalcitonin (PCT) is a valid marker in sepsis. Our goal in this study is to evaluate its usefulness as a diagnostic marker in detecting CRBSI among hemodialysis patients who present with suspected CRBSI. PATIENTS AND METHODS: Thirty-one hemodialysis patients with suspected CRBSI were enrolled in this study...
July 26, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28754460/virulence-and-antibiotic-resistance-of-staphylococcus-aureus-isolated-from-bloodstream-infections-and-pneumonia-in-southern-poland
#7
Monika Pomorska-Wesołowska, Agnieszka Chmielarczyk, Monika Chlebowicz, Grzegorz Ziółkowski, Anna Szczypta, Joanna Natkaniec, Dorota Romaniszyn, Monika Pobiega, Mirosława Dzikowska, Lech Krawczyk, Joanna Kozioł, Jadwiga Wójkowska-Mach
OBJECTIVES: Staphylococcus aureus remains the most important cause of infections in hospitals and long-term care facilities.The aim of this study was to analyse the resistance, virulence and the epidemiological and genetic relationship of SA from bloodstream infections and pneumonia from patients in Southern Poland. METHODS: All strains were tested using disk diffusion antimicrobial susceptibility methods. E-tests for vancomycin, teicoplanin, tygecycline, oxacillin, cefoxitin and penicillin were also performed...
July 25, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28750921/the-methodology-of-surveillance-for-antimicrobial-resistance-and-healthcare-associated-infections-in-europe-suspire-a-systematic-review-of-publicly-available-information
#8
REVIEW
María Núñez-Núñez, María Dolores Navarro, Virginia Palomo, Nithya Babu Rajendran, María Dolores Del Toro, Andreas Voss, Mike Sharland, Frangiscos Sifakis, Evelina Tacconelli, Jesús Rodríguez-Baño
OBJECTIVES: Surveillance is a key component of any control strategy for health-care associated infections (HAIs) and antimicrobial resistance (AMR), and public availability of methodological aspects is crucial for the interpretation of the data. We sought to systematically review publicly available information for HAIs and/or AMR surveillance systems organised by public institutions or scientific societies in European countries. METHODS: A systematic review of scientific and grey literature following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines was performed...
July 24, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28738847/longitudinal-genomic-surveillance-of-multidrug-resistant-escherichia-coli-carriage-in-a-long-term-care-facility-in-the-united-kingdom
#9
Hayley J Brodrick, Kathy E Raven, Teemu Kallonen, Dorota Jamrozy, Beth Blane, Nicholas M Brown, Veronique Martin, M Estée Török, Julian Parkhill, Sharon J Peacock
BACKGROUND: Residents of long-term care facilities (LTCF) may have high carriage rates of multidrug-resistant pathogens, but are not currently included in surveillance programmes for antimicrobial resistance or healthcare-associated infections. Here, we describe the value derived from a longitudinal epidemiological and genomic surveillance study of drug-resistant Escherichia coli in a LTCF in the United Kingdom (UK). METHODS: Forty-five of 90 (50%) residents were recruited and followed for six months in 2014...
July 25, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28735318/trends-of-bloodstream-infections-in-a-university-greek-hospital-during-a-three-year-period-incidence-of-multidrug-resistant-bacteria-and-seasonality-in-gram-negative-predominance
#10
Fevronia Kolonitsiou, Matthaios Papadimitriou-Olivgeris, Anastasia Spiliopoulou, Vasiliki Stamouli, Vasileios Papakostas, Eleni Apostolopoulou, Christos Panagiotopoulos, Markos Marangos, Evangelos D Anastassiou, Myrto Christofidou, Iris Spiliopoulou
The aim of the study was to assess the epidemiology, the incidence of multidrug-resistant bacteria and bloodstream infections' (BSIs) seasonality in a university hospital. This retrospective study was carried out in the University General Hospital of Patras, Greece, during 2011-13 y. Blood cultures from patients with clinical presentation suggestive of bloodstream infection were performed by the BacT/ALERT System. Isolates were identified by Vitek 2 Advanced Expert System. Antibiotic susceptibility testing was performed by the disk diffusion method and E-test...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28729206/antimicrobial-resistance-patterns-of-gram-negative-bacteria-isolated-from-bloodstream-infections-in-an-iranian-referral-pediatric-hospital-a-six-year-study
#11
Shima Mahmoudi, Masoumeh Mahzari, Maryam Banar, Babak Pourakbari, Mohammad Taghi Haghi Ashtiani, Mohsen Mohammadi, Sepideh Keshavarz Valian, Setareh Mamishi
INTRODUCTION: Bloodstream infections (BSIs) are considered as a major cause of morbidity and mortality in children all over the world. The aim of this study was to describe the epidemiology and antimicrobial resistance patterns of Gram-negative bacteria (GNB) isolated from bloodstream infections (BSIs) in children admitted to the Children Medical Center Hospital (CMC), Tehran, Iran. METHODS: Clinical and microbiological data of the patients with positive blood cultures was collected from March 2011 to September 2016...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28721352/detection-of-mcr-1-carrying-escherichia-coli-causing-bloodstream-infection-in-a-new-york-city-hospital-avian-origins-human-concerns
#12
Nenad Macesic, Daniel Green, Zheng Wang, Sean B Sullivan, Kevin Shim, Sarah Park, Susan Whittier, E Yoko Furuya, Angela Gomez-Simmonds, Anne-Catrin Uhlemann
The spread of mcr-1 in the United States remains poorly defined. mcr-1-producing Escherichia coli that also carried blaSHV-12 was detected in a hospitalized patient. No additional cases were identified during screening of 801 Gram-negative isolates. Genomic sequencing identified an IncX4 mcr-1- harboring plasmid and ST117 clonal background associated with avian pathogenic E coli.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28717239/a-novel-pathogen-capturing-device-for-removal-and-detection
#13
Gwangseong Kim, Horatiu Vinerean, Angelo Gaitas
A simple technique that employs an antibody coated polydimethylsiloxane tube is used for effective capturing of bloodborne and foodborne pathogens. By recirculating the entire sample through the antibody coated tube, accumulation of target pathogens is achieved, thereby delivering a higher concentration of pathogens in a small volume. The described method can provide an effective and economical solution to microbiology techniques that rely on enrichment, thereby expediting diagnostics. Using this method 80...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716670/nationwide-study-on-peripheral-venous-catheter-associated-bloodstream-infections-in-internal-medicine-departments
#14
María Guembe, María Jesús Pérez-Granda, José Antonio Capdevila, José Barberán, Blanca Pinilla, Pablo Martín-Rabadán, Emilio Bouza
BACKGROUND: The use of peripheral venous catheters (PVCs) has increased outside the intensive care unit, as have rates of peripheral venous catheter associated-bloodstream infection (PVC-BSI). The internal medicine department (IMD) is one of the main wards where PVCs are widely used. However, data on the incidence of PVC-BSI and its characteristics in the IMD are scarce. AIM: Our objective was to assess the incidence of PVC-BSI episodes detected in IMDs in Spain...
July 14, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28713357/extensively-drug-resistant-klebsiella-pneumoniae-causing-nosocomial-bloodstream-infections-in-china-molecular-investigation-of-antibiotic-resistance-determinants-informing-therapy-and-clinical-outcomes
#15
Wenzi Bi, Haiyang Liu, Rhys A Dunstan, Bin Li, Von Vergel L Torres, Jianming Cao, Lijiang Chen, Jonathan J Wilksch, Richard A Strugnell, Trevor Lithgow, Tieli Zhou
The rise in diversity of antimicrobial resistance phenotypes seen in Klebsiella pneumoniae is becoming a serious antibiotic management problem. We sought to investigate the molecular characteristics and clinical implications of extensively drug-resistant (XDR) K. pneumoniae isolated from different nosocomial bloodstream infections (BSIs) patients from July 2013 to November 2015. Even in combination treatment, meropenem did not protect against mortality of BSIs patients (P = 0.015). In contrast, tigecycline in combination with other antimicrobial agents significantly protected against mortality (P = 0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28708463/epidemiological-trends-observed-from-molecular-characterization-of-methicillin-resistant-staphylococcus-aureus-isolates-from-blood-cultures-at-a-japanese-university-hospital-2012-2015
#16
Yuri Miura, Tetsuo Yamaguchi, Itaru Nakamura, Shinobu Koyama, Kiyoko Tamai, Takashi Okanda, Tetsuya Matsumoto
Despite increasing reports of skin and soft tissue infections caused by community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) in Japan, the extent to which these strains cause nosocomial infections remains unknown, and this is especially true for bloodstream infections. In this study, we molecularly characterized MRSA isolates from Japanese blood samples. Among the 151 MRSA isolates collected from 53 medical facilities in 2011, 115 (76%) and 30 (20%) were classified as staphylococcal cassette chromosome mec (SCCmec) types II and IV, respectively, while the Panton-Valentine leukocidin (PVL) gene was detected in only two isolates...
July 14, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28705768/the-clinical-and-microbiological-characteristics-of-infections-in-burn-patients-from-the-formosa-fun-coast-dust-explosion
#17
Tzu-Chao Lin, Rui-Xin Wu, Chih-Chien Chiu, Ya-Sung Yang, Yi Lee, Jung-Chung Lin, Feng-Yee Chang
BACKGROUND/PURPOSE: Bloodstream infection is a leading cause of mortality among burn patients. This study aimed to evaluate the risk factors, causative pathogens, and the relationship between bloodstream infections and other infections among burn patients from the Formosa Fun Coast Dust Explosion. METHODS: This retrospective study evaluated the demographic and clinical characteristics, infection types, causative pathogen(s), and isolates' antibiotic susceptibilities from patients who were hospitalized between June 27 and September 31, 2015...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28703830/rapid-real-time-recirculating-pcr-using-localized-surface-plasmon-resonance-lspr-and-piezo-electric-pumping
#18
J M Haber, P R C Gascoyne, K Sokolov
Rapid detection and characterization of pathogens in patients with bloodstream infections (BSIs) is a persistent problem for modern medicine, as current techniques are slow or provide incomplete diagnostic information. Real-time polymerase chain reaction (qPCR) allows specific detection of a wide range of targets and quantification of pathogenic burdens to aid in treatment planning. However, new technological advances are required for a rapid and multiplex implementation of qPCR in clinical applications. In this paper, the feasibility of a novel microfluidic platform for qPCR is presented, integrating highly sensitive, label-free localized surface plasmon resonance (LSPR) imaging of DNA hybridization into a recirculating chip design for real-time analysis...
August 8, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28683646/bloodstream-infections-in-acute-myeloid-leukemia-patients-treated-according-to-the-finnish-leukemia-group-aml-2003-protocol-a-prospective-nationwide-study
#19
Aarne Kolonen, Marjatta Sinisalo, Reetta Huttunen, Jaana Syrjänen, Janne Aittoniemi, Heini Huhtala, Marja Sankelo, Hannele Rintala, Riikka Räty, Esa Jantunen, Tapio Nousiainen, Marjaana Säily, Marjut Kauppila, Maija Itälä-Remes, Hanna Ollikainen, Auvo Rauhala, Pirjo Koistinen, Erkki Elonen
BACKGROUND: Infections greatly influence the outcome of acute myeloid leukemia (AML) patients receiving intensive treatment. The aim of this study was to establish the incidence, microbial etiology, risk factors and prognosis of bloodstream infections (BSIs) in patients with AML and compare the results with the previous treatment protocol (AML-92). METHODS: Registery data were gathered prospectively from 357 patients aged 16-65 years recruited on the AML-2003 treatment protocol between November 2003 and November 2011 during different treatment cycles...
July 6, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28679460/serratia-marcescens-bacteremia-nosocomial-cluster-following-narcotic-diversion
#20
Leah M Schuppener, Aurora E Pop-Vicas, Erin G Brooks, Megan N Duster, Christopher J Crnich, Alana K Sterkel, Aaron P Webb, Nasia Safdar
OBJECTIVE To describe the investigation and control of a cluster of Serratia marcescens bacteremia in a 505-bed tertiary-care center. METHODS Cluster cases were defined as all patients with S. marcescens bacteremia between March 2 and April 7, 2014, who were found to have identical or related blood isolates determined by molecular typing with pulsed-field gel electrophoresis. Cases were compared using bivariate analysis with controls admitted at the same time and to the same service as the cases, in a 4:1 ratio...
July 6, 2017: Infection Control and Hospital Epidemiology
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