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Microbiology of pneumonia

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https://www.readbyqxmd.com/read/28339727/rapid-decrease-in-rates-of-hospitalization-resulting-from-invasive-pneumococcal-disease-and-community-acquired-pneumonia-in-children-aged-60-months-after-13-valent-pneumococcal-conjugate-vaccine-introduction-in-argentina
#1
Eduardo L López, Eduardo Glatstein, Gustavo C Ezcurra, Marisa Iacono, Eduardo Teplitz, Analía V Garnero, Daniela L Lazzarini, Miryan Vázquez, María M Contrini
Background.: In January 2012, Argentina included universal pneumococcal vaccination in the routine childhood vaccination program using a 13-valent pneumococcal conjugate vaccine (PCV13). A 2 + 1 schedule (2 doses in the first year of life and a booster dose at 12 months of age) in children aged <2 years and 2-dose catch-up immunization in children aged 13 to 24 months was administered during the first year of vaccine introduction. The purpose of this study was to assess the burdens of invasive pneumococcal disease (IPD) and/or community-acquired pneumonia (CAP) in hospitalized children younger than 5 years during the first 2 years of the program compared to those in the prevaccination period in our setting...
February 23, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28336165/suspicious-outbreak-of-ventilator-associated-pneumonia-caused-by-burkholderia-cepacia-in-a-surgical-intensive-care-unit
#2
LiPing Guo, Gang Li, Jian Wang, Xia Zhao, Shupeng Wang, Li Zhai, Hongbin Jia, Bin Cao
BACKGROUND: We reviewed Burkholderia cepacia infections in a hospital from 2013-2016 to report a suspicious outbreak that occurred in a surgical intensive care unit in 2015, and to outline the infection control measures adopted thereafter. METHODS: Review of the health care-associated infection data regarding B cepacia via the surveillance system, hospital information system, electronic medical records, and laboratory information system together with the outbreak investigation was managed by the health care-associated infection control team...
March 20, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28335406/factors-that-negatively-affect-the-prognosis-of-pediatric-community-acquired-pneumonia-in-district-hospital-in-tanzania
#3
Serena Caggiano, Nicola Ullmann, Elisa De Vitis, Marzia Trivelli, Chiara Mariani, Maria Podagrosi, Fabiana Ursitti, Chiara Bertolaso, Carolina Putotto, Marta Unolt, Andrea Pietravalle, Paola Pansa, Kajoro Mphayokulela, Maria Incoronata Lemmo, Michael Mkwambe, Joseph Kazaura, Marzia Duse, Francesco Nieddu, Chiara Azzari, Renato Cutrera
Community-acquired pneumonia (CAP) is still the most important cause of death in countries with scarce resources. All children (33 months ± 35 DS) discharged from the Pediatric Unit of Itigi Hospital, Tanzania, with a diagnosis of CAP from August 2014 to April 2015 were enrolled. Clinical data were gathered. Dried blood spot (DBS) samples for quantitative real-time polymerase chain reaction (PCR) for bacterial detection were collected in all 100 children included. Twenty-four percent of patients were identified with severe CAP and 11% died...
March 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28299769/the-effect-of-urinary-catheters-on-microbial-biofilms-and-catheter-associated-urinary-tract-infections
#4
Sahra Kirmusaoglu, Seyhun Yurdugül, Ahmet Metin, Suphi Vehid
PURPOSE: The aims of this study were to determine relationship between biofilm producer microorganisms attached to urinary catheters (UCs) and urinary catheter-associated urinary tract infections (CAUTIs), to determine the rate of CAUTI development and the relationship between CAUTI and catheterization period in catheterized patients. MATERIALS AND METHODS: Urinary catheters from 143 inpatients who were hospitalized in Abant Izzet Baysal University Hospital Urinary Service, and urine samples of these patients before and after catheterization of urinarycatheter were collected...
March 16, 2017: Urology Journal
https://www.readbyqxmd.com/read/28296035/sepsis-after-renal-transplantation-clinical-immunological-and-microbiological-risk-factors
#5
Thomas Schachtner, Maik Stein, Petra Reinke
BACKGROUND: As immunosuppressive therapy and allograft survival have improved, the increased incidence of sepsis has become a major hurdle of disease-free survival after renal transplantation. METHODS: We identified 112 of 957 kidney transplant recipients (KTRs) with sepsis. 31 KTRs developed severe sepsis or septic shock, and 30 KTRs died from sepsis. KTRs without sepsis were used for comparison. CMV-specific and alloreactive T-cells were measured using an interferon-γ Elispot-assay...
March 11, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28288860/epidemiology-of-multidrug-resistant-gram-negative-pathogens-isolated-from-ventilator-associated-pneumonia-in-icu-patients
#6
Richa Gupta, Abida Malik, Meher Rizvi, Moied Ahmed, Anuradha Singh
OBJECTIVES: Antibiotic resistance among Gram-negative pathogens isolated from ventilator-associated pneumonia (VAP) poses a grave threat in intensive care unit (ICU) patients. The aim of this study was to assess the prevalence of pathogens in ICU patients and their drug resistance profile. The prevalence of extended-spectrum β-lactamases (ESBLs), AmpC β-lactamases and metallo-β-lactamases (MBLs) was also assessed. METHODS: Tracheal aspirates were collected aseptically from 87 ICU patients between May 2012 and January 2014...
March 10, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28287010/diagnosis-and-management-of-pneumocystis-jirovecii-infection
#7
P Lewis White, Matthijs Backx, Rosemary A Barnes
Pneumocystis jirovecii is a ubiquitous fungus, which causes pneumonia in humans. Diagnosis was hampered by the inability to culture the organism, and based on microscopic examination of respiratory samples or clinical presentation. New assays can assist in the diagnosis and even aid with the emergence of resistant infections. Areas Covered: This manuscript will provide background information on Pneumocystis pneumonia (PcP). Diagnosis, from radiological to non-microbiological (e.g. Lactate dehydrogenase) and microbiological investigations (Microscopy, PCR, β-D-Glucan) will be discussed...
March 13, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28284196/burden-of-bloodstream-infection-in-an-area-of-mid-norway-2002-2013-a-prospective-population-based-observational-study
#8
Arne Mehl, Bjørn Olav Åsvold, Stian Lydersen, Julie Paulsen, Erik Solligård, Jan Kristian Damås, Stig Harthug, Tom-Harald Edna
BACKGROUND: Studies from several countries indicate that the incidence and mortality of bloodstream infection (BSI) have been increasing over time. METHODS: We studied the burden of disease and death related to BSI in a defined geographical area of Mid-Norway, where BSI episodes were prospectively recorded by the same microbiological department during 12 consecutive years. Death from BSI was defined as death within 30 days of BSI detection. Age and sex standardized incidence and mortality rates and case fatality rates were calculated...
March 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28282407/potential-disease-agents-in-domestic-goats-and-relevance-to-bighorn-sheep-ovis-canadensis-management
#9
Mark L Drew, Glen C Weiser
Domestic goats are raised for meat, milk and hair production, in herds for rangeland weed control, and as pack animals. Domestic sheep, goats and wild bighorn sheep are all susceptible to a multifactorial pneumonia. We sampled 43 herd goats from 7 herds and 48 pack goats from 11 herds for viral and bacterial serology, parasitology, and Pasteurellaceae microbiology. The goats in this study were in generally good health, although most goats did harbor various pathogens and parasites including several bacteria, specifically Pasteurellaceae, which have been associated with pneumonia in free-ranging bighorn sheep...
2017: PloS One
https://www.readbyqxmd.com/read/28276227/-usefulness-of-biomarkers-to-predict-bacteraemia-in-patients-with-infection-in-the-emergency-department
#10
REVIEW
A Julián-Jiménez, F J Candel, J González-Del Castillo
Between all patients attended in the Emergency Department (ED), 14.3% have an infectious disease diagnosis. Blood cultures (BC) are obtained in 14.6% of patients and have a profitability of 20%, whereas 1% are considered as contaminated and 1-3% of positive cultures correspond to discharge patients ("hidden bacteraemia"). The highest number of confirmed bacteraemias comes from the samples of patients with urinary tract infections, followed by community-acquired pneumonia. The suspicion and detection of bacteraemia have an important diagnostic and prognostic significance and could modify some important making-decisions (admission, BC request, administration of appropriate and early antimicrobial, etc)...
March 8, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28274205/rapid-detection-of-carbapenemase-producing-klebsiella-pneumoniae-strains-derived-from-blood-cultures-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms
#11
Christina Sakarikou, Marco Ciotti, Camilla Dolfa, Silvia Angeletti, Cartesio Favalli
BACKGROUND: Carbapenemase-producing Enterobacteriaceae (CPE), particularly carbapenemase-producing Klebsiella pneumoniae isolates, are important causative agents of nosocomial infections associated with significant mortality rates mostly in critical wards. The rapid detection and typing of these strains is critical either for surveillance purposes and to prevent outbreaks and optimize antibiotic therapy. In this study, the MALDI-TOF MS method was used to detect rapidly these isolates from blood cultures (BCs) and to obtain proteomic profiles enable to discriminate between carbapenemase-producing and non-carbapenemase-producing strains...
March 8, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28271647/mycobacterium-kansasii-pneumonia-with-mediastinal-lymphadenitis-in-a-patient-with-acute-myeloid-leukemia-successful-treatment-to-stem-cell-transplantation
#12
Yeon Geun Choi, Sung Yeon Cho, Dong Gun Lee, Eunjung Yim, Hyonsoo Joo, Seongyul Ryu, Jae Ki Choi, Hee Je Kim
Non-tuberculous mycobacterial (NTM) disease is a relatively rare cause of neutropenic fever in patients with hematologic malignancies. During the neutropenic period, performing invasive procedures for microbiological or pathological confirmation is difficult. In addition, the optimal treatment duration for NTM disease in patients with leukemia, especially prior to stem cell transplantation (SCT), has not been documented. Therefore, we report a case of pneumonia with necrotizing lymphadenitis caused by Mycobacterium kansasii diagnosed during chemotherapy being performed for acute myeloid leukemia...
January 19, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28270546/variability-in-antibiotic-prescribing-for-community-acquired-pneumonia
#13
Lori K Handy, Matthew Bryan, Jeffrey S Gerber, Theoklis Zaoutis, Kristen A Feemster
BACKGROUND AND OBJECTIVES: Published guidelines recommend amoxicillin for most children with community-acquired pneumonia (CAP), yet macrolides and broad-spectrum antibiotics are more commonly prescribed. We aimed to determine the patient and clinician characteristics associated with the prescription of amoxicillin versus macrolide or broad-spectrum antibiotics for CAP. METHODS: Retrospective cohort study in an outpatient pediatric primary care network from July 1, 2009 to June 30, 2013...
March 7, 2017: Pediatrics
https://www.readbyqxmd.com/read/28266699/rapidly-progressive-and-almost-lethal-pneumonia
#14
Juancarlo Martínez-González, Carlos Robles-Arias, William Rodríguez-Cintrón
We herein describe the case of a 65-year-old male patient who presented with Osler's triad, which is the combination of endocarditis, pneumonia, and meningitis. This report is even more unusual since the pathogen isolated was the invasive and virulent strain of Streptococcus pneumoniae serotype 3. The clinical entity described is also called Austrian syndrome. Even though rare in this antibiotic era, the syndrome remains one of high morbidity and mortality. This particular case is of paramount importance for the clinician reader...
March 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28264021/antimicrobial-use-in-paediatric-patients-in-a-teaching-hospital-in-ethiopia
#15
Hafte Kahsay Kebede, Hailay Abrha Gesesew, Tewodros Eyob Woldehaimanot, Kabaye Kumela Goro
BACKGROUND: Antibiotics use in in children are different from adults due to a lack of data on pharmacokinetics, pharmacodynamics, efficacy and safety of drugs, different physiological spectrum, pediatrics populations being vulnerable to the majority of the illnesses, and the adverse effect of their irrational use is more serious. However, antibiotic use is not explored much in a paediatric population. The current study focused on antibiotic use among pediatric population using data from a tertiary hospital in Ethiopia...
2017: PloS One
https://www.readbyqxmd.com/read/28257985/microbiological-aspects-of-fournier-s-gangrene
#16
Tuncay Yilmazlar, Baris Gulcu, Ozgen Isik, Ersin Ozturk
BACKGROUND: Fournier's gangrene (FG) is a devastating disease that is characterized by necrotizing fasciitis of the perineal, genital, or perianal region. Broad-spectrum antibiotics are the key component of its treatment. However, there is paucity of data regarding the optimal empirical antibiotherapy for FG. MATERIALS AND METHODS: Data from patients who underwent surgery for FG between January 2007 and December 2012 were retrieved from a prospectively collected departmental FG database...
February 28, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28257499/deacetylation-of-sialic-acid-by-esterases-potentiates-pneumococcal-neuraminidase-activity-for-mucin-utilization-colonization-and-virulence
#17
Hasan F Kahya, Peter W Andrew, Hasan Yesilkaya
Pneumococcal neuraminidase is a key enzyme for sequential deglycosylation of host glycans, and plays an important role in host survival, colonization, and pathogenesis of infections caused by Streptococcus pneumoniae. One of the factors that can affect the activity of neuraminidase is the amount and position of acetylation present in its substrate sialic acid. We hypothesised that pneumococcal esterases potentiate neuraminidase activity by removing acetylation from sialic acid, and that will have a major effect on pneumococcal survival on mucin, colonization, and virulence...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28257317/pulmonary-infections-in-critical-intensive-care-rapid-diagnosis-and-optimizing-antimicrobial-usage
#18
Ivor S Douglas
PURPOSE OF REVIEW: Diagnosis of pulmonary infection, including hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) in the critically ill patient remains a common and therapeutically challenging diagnosis with significant attributable morbidity, mortality, and cost. Current clinical approaches to surveillance, early detection and, conventional culture-based microbiology are inadequate for optimal targeted antibiotic treatment and stewardship. Efforts to enhance diagnosis of HAP and VAP and the impact of these novel approaches on rational antimicrobial selection and stewardship are the focus of recent studies reviewed here...
March 2, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28249572/efficacy-and-safety-of-de-escalation-therapy-to-ertapenem-for-treatment-of-infections-caused-by-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-an-open-label-randomized-controlled-trial
#19
Pinyo Rattanaumpawan, Peerawong Werarak, Anupop Jitmuang, Pattarachai Kiratisin, Visanu Thamlikitkul
BACKGROUND: Carbapenem antibiotics are considered the treatment of choice for serious extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria (GNB) infections. The study objectives were to evaluate efficacy and safety of de-escalation therapy to ertapenem for treatment of infections caused by extended-spectrum-β-lactamase-producing Enterobacteriaceae. METHODS: We conducted a randomized controlled trial of adult patients with documented ESBL-producing Enterobacteriaceae infections who had received any group 2 carbapenem for less than 96 h...
March 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28243751/septifast-versus-blood-culture-in-clinical-routine-a-report-on-3-years-experience
#20
Florian Korber, Iris Zeller, Michaela Grünstäudl, Birgit Willinger, Petra Apfalter, Alexander M Hirschl, Athanasios Makristathis
BACKGROUND: In recent years a multiplex real-time PCR (SeptiFast) has been introduced, allowing detection of 25 common blood pathogens considerably faster than conventional blood culture. METHODS: SeptiFast was applied routinely in addition to blood culture in cases of critically ill patients with fever and other signs of severe systemic infections. In this study data of 470 episodes were retrospectively analysed to assess the impact of various parameters, such as clinical indications, assigning ward and antimicrobial treatment on test outcome using a multivariate logistic model...
February 27, 2017: Wiener Klinische Wochenschrift
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