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Viral pneumonia and bacterial pneumonia

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https://www.readbyqxmd.com/read/29018819/the-clinical-significance-of-filmarray-respiratory-panel-in-diagnosing-community-acquired-pneumonia
#1
Huanzhu Chen, Huilan Weng, Meirui Lin, Ping He, Yazhen Li, Qingdong Xie, Changwen Ke, Xiaoyang Jiao
AIM: FilmArray Respiratory Panel (FilmArray RP) test is an emerging diagnostic method in fast detecting multiple respiratory pathogens; the methodology and clinical significance of FilmArray RP in community-acquired pneumonia (CAP) diagnosis were evaluated in this study. METHODS: Specimens from 74 patients with CAP were analyzed and compared using FilmArray RP, traditional multiple PCR assay, bacterial (or fungal) culture, and serological detection. RESULTS: FilmArray RP and multiplex PCR showed 100% coincidence rate in detecting coronaviruses 229E, OC43, HKU1, and NL63, human metapneumovirus, influenza A and B, and parainfluenza viruses (PIV1, PIV2, and PIV4)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28991941/fever-rash-and-leukopenia-in-a-32-year-old-man-%C3%A2-dx
#2
Robert Gauer, Collin Hu, Lindsey Beaman
A 32-year-old man was admitted to our hospital with fever, chills, malaise, leukopenia, and a rash. About 3 weeks earlier, he'd had oral maxillofacial surgery and started a 10-day course of prophylactic amoxicillin/clavulanic acid. Fifteen days after the surgery, he developed a fever (temperature, 103° F), chills, arthralgia, myalgia, cough, diarrhea, and malaise. He was seen by his physician, who obtained a chest x-ray showing a lingular infiltrate. The physician diagnosed influenza and pneumonia in this patient, and prescribed oseltamivir, azithromycin, and an additional course of amoxicillin/clavulanic acid...
October 2017: Journal of Family Practice
https://www.readbyqxmd.com/read/28988248/risk-of-pneumonia-among-patients-with-splenectomy-a-retrospective-population-based-cohort-study
#3
Shih-Wei Lai, Cheng-Li Lin, Kuan-Fu Liao
BACKGROUND: People without a spleen are particularly susceptible to various overwhelming infections including pneumonia. Although the association between splenectomy and pneumonia has been previously studied, there has been no study using the national claims data. OBJECTIVES: The aim of the study was to investigate the association between splenectomy and pneumonia. DESIGN: A retrospective population-based cohort analysis. SETTINGS: Database of the Taiwan National Health Insurance Program...
September 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/28948369/acute-hypoxemic-respiratory-failure-in-immunocompromised-patients-the-efraim-multinational-prospective-cohort-study
#4
Elie Azoulay, Peter Pickkers, Marcio Soares, Anders Perner, Jordi Rello, Philippe R Bauer, Andry van de Louw, Pleun Hemelaar, Virginie Lemiale, Fabio Silvio Taccone, Ignacio Martin Loeches, Tine Sylvest Meyhoff, Jorge Salluh, Peter Schellongowski, Katerina Rusinova, Nicolas Terzi, Sangeeta Mehta, Massimo Antonelli, Achille Kouatchet, Andreas Barratt-Due, Miia Valkonen, Precious Pearl Landburg, Fabrice Bruneel, Ramin Brandt Bukan, Frédéric Pène, Victoria Metaxa, Anne Sophie Moreau, Virginie Souppart, Gaston Burghi, Christophe Girault, Ulysses V A Silva, Luca Montini, François Barbier, Lene B Nielsen, Benjamin Gaborit, Djamel Mokart, Sylvie Chevret
BACKGROUND: In immunocompromised patients with acute hypoxemic respiratory failure (ARF), initial management aims primarily to avoid invasive mechanical ventilation (IMV). METHODS: To assess the impact of initial management on IMV and mortality rates, we performed a multinational observational prospective cohort study in 16 countries (68 centers). RESULTS: A total of 1611 patients were enrolled (hematological malignancies 51.9%, solid tumors 35...
September 25, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28929964/-investigation-of-bacterial-and-viral-etiology-in-community-acquired-central-nervous-system-infections-with-molecular-methods
#5
Hasip Kahraman, Alper Tünger, Şebnem Şenol, Hörü Gazi, Meltem Avcı, Bahar Örmen, Nesrin Türker, Sabri Atalay, Şükran Köse, Sercan Ulusoy, Meltem Işıkgöz Taşbakan, Oğuz Reşat Sipahi, Tansu Yamazhan, Zeynep Gülay, Sema Alp Çavuş, Hüsnü Pullukçu
In this multicenter prospective cohort study, it was aimed to evaluate the bacterial and viral etiology in community-acquired central nervous system infections by standart bacteriological culture and multiplex polymerase chain reaction (PCR) methods. Patients hospitalized with central nervous system infections between April 2012 and February 2014 were enrolled in the study. Demographic and clinical information of the patients were collected prospectively. Cerebrospinal fluid (CSF) samples of the patients were examined by standart bacteriological culture methods, bacterial multiplex PCR (Seeplex meningitis-B ACE Detection (Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae, Listeria monocytogenes, Group B streptococci) and viral multiplex PCR (Seeplex meningitis-V1 ACE Detection kits herpes simplex virus-1 (HSV1), herpes simplex virus-2 (HSV2), varicella zoster virus (VZV), cytomegalovirus (CMV), Epstein Barr virus (EBV) and human herpes virus 6 (HHV6)) (Seeplex meningitis-V2 ACE Detection kit (enteroviruses))...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28928736/selective-igm-deficiency-an-underestimated-primary-immunodeficiency
#6
REVIEW
Sudhir Gupta, Ankmalika Gupta
Although selective IgM deficiency (SIGMD) was described almost five decades ago, it was largely ignored as a primary immunodeficiency. SIGMD is defined as serum IgM levels below two SD of mean with normal serum IgG and IgA. It appears to be more common than originally realized. SIGMD is observed in both children and adults. Patients with SIGMD may be asymptomatic; however, approximately 80% of patients with SIGMD present with infections with bacteria, viruses, fungi, and protozoa. There is an increased frequency of allergic and autoimmune diseases in SIGMD...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28928207/a-perfect-storm-increased-colonization-and-failure-of-vaccination-leads-to-severe-secondary-bacterial-infection-in-influenza-virus-infected-obese-mice
#7
Erik A Karlsson, Victoria A Meliopoulos, Nicholas C van de Velde, Lee-Ann van de Velde, Beth Mann, Geli Gao, Jason Rosch, Elaine Tuomanen, Jon McCullers, Peter Vogel, Stacey Schultz-Cherry
Obesity is a risk factor for developing severe disease following influenza virus infection; however, the comorbidity of obesity and secondary bacterial infection, a serious complication of influenza virus infections, is unknown. To fill this gap in knowledge, lean and obese C57BL/6 mice were infected with a nonlethal dose of influenza virus followed by a nonlethal dose of Streptococcus pneumoniae Strikingly, not only did significantly enhanced death occur in obese coinfected mice compared to lean controls, but also high mortality was seen irrespective of influenza virus strain, bacterial strain, or timing of coinfection...
September 19, 2017: MBio
https://www.readbyqxmd.com/read/28913912/streptococcus-pneumoniae-colonization-of-the-nasopharynx-is-associated-with-increased-severity-during-respiratory-syncytial-virus-infection-in-young-children
#8
Jaelle C Brealey, Keith J Chappell, Sally Galbraith, Emmanuelle Fantino, Jane Gaydon, Sarah Tozer, Paul R Young, Patrick G Holt, Peter D Sly
BACKGROUND AND OBJECTIVE: Respiratory syncytial virus (RSV) is the most significant cause of acute respiratory infection (ARI) in early life. RSV and other respiratory viruses are known to stimulate substantial outgrowth of potentially pathogenic bacteria in the upper airways of young children. However, the clinical significance of interactions between viruses and bacteria is currently unclear. The present study aimed to clarify the effect of viral and bacterial co-detections on disease severity during paediatric ARI...
September 15, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28905531/elucidation-of-bacterial-pneumonia-causing-pathogens-in-patients-with-respiratory-viral-infection
#9
Hwa Sik Jung, Byung Ju Kang, Seung Won Ra, Kwang Won Seo, Yangjin Jegal, Jae Bum Jun, Jiwon Jung, Joseph Jeong, Hee Jeong Jeon, Jae Sung Ahn, Taehoon Lee, Jong Joon Ahn
BACKGROUND: Bacterial pneumonia occurring after respiratory viral infection is common. However, the predominant bacterial species causing pneumonia secondary to respiratory viral infections other than influenza remain unknown. The purpose of this study was to know whether the pathogens causing post-viral bacterial pneumonia vary according to the type of respiratory virus. METHODS: Study subjects were 5,298 patients, who underwent multiplex real-time polymerase chain reaction for simultaneous detection of respiratory viruses, among who visited the emergency department or outpatient clinic with respiratory symptoms at Ulsan University Hospital between April 2013 and March 2016...
October 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28899468/-pathogen-distribution-and-bacterial-resistance-in-children-with-severe-community-acquired-pneumonia
#10
Yun-Yun Lu, Rong Luo, Zhou Fu
OBJECTIVE: To investigate the distribution of pathogens and bacterial resistance in children with severe community-acquired pneumonia (CAP). METHODS: A total of 522 children with severe CAP who were hospitalized in 2016 were enrolled as study subjects. According to their age, they were divided into infant group (402 infants aged 28 days to 1 year), young children group (73 children aged 1 to 3 years), preschool children group (35 children aged 3 to 6 years), and school-aged children group (12 children aged ≥6 years)...
September 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28894729/procalcitonin-for-diagnostics-and-treatment-decisions-in-pediatric-lower-respiratory-tract-infections
#11
Philipp Baumann, Gurli Baer, Jessica Bonhoeffer, Aline Fuchs, Verena Gotta, Ulrich Heininger, Nicole Ritz, Gabor Szinnai, Jan Bonhoeffer
Mortality and morbidity remain high in pediatric lower respiratory tract infections (LRTIs) despite progress in research and implementation of global diagnostic and treatment strategies in the last decade. Still, 120 million annual episodes of pneumonia affect children younger than 5 years each year leading to 1.3 million fatalities with the major burden of disease carried by low- and middle-income countries (95%). The definition of pneumonia is still challenging. Traditional diagnostic measures (i.e., chest radiographs, C-reactive protein) are unable to distinguish viral and from bacterial etiology...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28878760/respiratory-commensal-bacteria-corynebacterium-pseudodiphtheriticum-improves-resistance-of-infant-mice-to-respiratory-syncytial-virus-and-streptococcus-pneumoniae-superinfection
#12
Paulraj Kanmani, Patricia Clua, Maria G Vizoso-Pinto, Cecilia Rodriguez, Susana Alvarez, Vyacheslav Melnikov, Hideki Takahashi, Haruki Kitazawa, Julio Villena
Corynebacterium pseudodiphtheriticum is a Gram-positive bacterium found as a member of the normal microbiota of the upper respiratory tract. It was suggested that C. pseudodiphtheriticum may be potentially used as a next-generation probiotic for nasal application, although no deep studies were performed in this regard. We hypothesized that human isolate C. pseudodiphtheriticum strain 090104 is able to modulate the respiratory innate immune response and beneficially influence the resistance to viral and bacterial infections...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28866263/use-of-multiplex-pcr-based-molecular-diagnostics-in-diagnosis-of-suspected-cns-infections-in-tertiary-care-setting-a-retrospective-study
#13
Mahendra Javali, Purushottam Acharya, Aneesh Mehta, Aju Abraham John, Rohan Mahale, R Srinivasa
OBJECTIVES: CNS infections like meningitis and encephalitis pose enormous healthcare challenges due to mortality, sequelae and socioeconomic burden. In tertiary setting, clinical, microbiological, cytological and radiological investigations are not distinctive enough for diagnosing microbial etiology. Molecular diagnostics is filling this gap. We evaluated the clinical impact of a commercially available multiplex molecular diagnostic system - SES for diagnosing suspected CNS infections...
August 30, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28852481/infectious-complications-of-rituximab-therapy-in-renal-disease
#14
Andrew Nixon, Leanne Ogden, Alexander Woywodt, Ajay Dhaygude
Rituximab, an anti-CD20 monoclonal antibody, was originally used to treat B-cell malignancies. Its use has significantly increased in recent years, as it is now also used to treat a variety of autoimmune diseases including rheumatoid arthritis and ANCA-associated vasculitis (AAV). Initial studies suggested that the adverse effects of rituximab were minimal. Though the risk of malignancy with rituximab-based immunosuppressive regimens appears similar to that of the general population, there are now concerns regarding the risk of infectious complications...
August 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28847061/-study-on-the-classification-of-dominant-pathogens-related-to-febrile-respiratory-syndrome-based-on-the-method-of-bayes-discriminant-analysis
#15
X C Li, J S Li, L Meng, Y N Bai, D S Yu, X N Liu, X F Liu, X J Jiang, X W Ren, X T Yang, X P Shen, J W Zhang
Objective: To understand the dominant pathogens of febrile respiratory syndrome (FRS) patients in Gansu province and to establish the Bayes discriminant function in order to identify the patients infected with the dominant pathogens. Methods: FRS patients were collected in various sentinel hospitals of Gansu province from 2009 to 2015 and the dominant pathogens were determined by describing the composition of pathogenic profile. Significant clinical variables were selected by stepwise discriminant analysis to establish the Bayes discriminant function...
August 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28844414/childhood-community-acquired-pneumonia-a-review-of-etiology-and-antimicrobial-treatment-studies
#16
REVIEW
Gerdien A Tramper-Stranders
Community acquired pneumonia (CAP) is a leading cause of childhood morbidity worldwide. Because of the rising antimicrobial resistance rates and adverse effects of childhood antibiotic use on the developing microbiome, rational prescribing of antibiotics for CAP is important. This review summarizes and critically reflects on the available evidence for the epidemiology, etiology and antimicrobial management of childhood CAP. Larger prospective studies on antimicrobial management derive mostly from low- or middle-income countries as they have the highest burden of CAP...
July 15, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28843578/estimates-of-the-global-regional-and-national-morbidity-mortality-and-aetiologies-of-lower-respiratory-tract-infections-in-195-countries-a-systematic-analysis-for-the-global-burden-of-disease-study-2015
#17
(no author information available yet)
BACKGROUND: The Global Burden of Diseases, Injuries, and Risk Factors (GBD) Study 2015 provides an up-to-date analysis of the burden of lower respiratory tract infections (LRIs) in 195 countries. This study assesses cases, deaths, and aetiologies spanning the past 25 years and shows how the burden of LRI has changed in people of all ages. METHODS: We estimated LRI mortality by age, sex, geography, and year using a modelling platform shared across most causes of death in the GBD 2015 study called the Cause of Death Ensemble model...
August 23, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28837564/impact-of-meningitis-on-intelligence-and-development-a-systematic-review-and-meta-analysis
#18
Deborah Christie, Harunor Rashid, Haitham El-Bashir, Faye Sweeney, Tim Shore, Robert Booy, Russell M Viner
BACKGROUND: We undertook a systematic review and meta-analysis to address the question "what is the impact of meningitis on IQ and development." METHODS: Search: conducted using standardized search terms across Medline, PsychInfo and EMBASE to 06/2014. Eligibility: human studies of any infectious aetiology of meningitis reporting IQ or infant developmental age or stage outcomes. Quality: Centre for Evidence Based Medicine, Oxford, quality tools. Analysis: random effects meta-analysis by organism...
2017: PloS One
https://www.readbyqxmd.com/read/28808938/advances-in-vaccines-to-prevent-viral-respiratory-illnesses-in-children
#19
Aleisha J Anderson, Tom L Snelling, Hannah C Moore, Christopher C Blyth
Childhood vaccination has played a critical role in the reduction of morbidity and mortality from communicable diseases, including specific respiratory pathogens. Acute lower respiratory infection (ALRI) of both bacterial and viral aetiology continues to impact global child health. Key bacterial pathogens including Streptococcus pneumoniae and Haemophilus influenza type b are specifically targeted with current vaccination programmes, while at present there are less effective strategies for the prevention of viral disease...
August 14, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28802696/community-acquired-pneumonia-visualized-on-ct-scans-but-not-chest-radiographs-pathogens-severity-and-clinical-outcomes
#20
Cameron P Upchurch, Carlos G Grijalva, Richard G Wunderink, Derek J Williams, Grant W Waterer, Evan J Anderson, Yuwei Zhu, Eric M Hart, Frank Carroll, Anna M Bramley, Seema Jain, Kathryn M Edwards, Wesley H Self
BACKGROUND: The clinical significance of pneumonia visualized on CT scan in the setting of a normal chest radiograph is uncertain. METHODS: In a multicenter prospective surveillance study of adults hospitalized with community-acquired pneumonia (CAP), we compared the presenting clinical features, pathogens present, and outcomes of patients with pneumonia visualized on a CT scan but not on a concurrent chest radiograph (CT-only pneumonia) and those with pneumonia visualized on a chest radiograph...
August 9, 2017: Chest
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