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Pneumonia etiology

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https://www.readbyqxmd.com/read/27918383/etiology-of-acute-otitis-media-in-children-less-than-5-years-of-age-a-pooled-analysis-of-10-similarly-designed-observational-studies
#1
Melissa K Van Dyke, Jean-Yves Pirçon, Robert Cohen, Shabir A Madhi, Andrés Rosenblüt, Mercedes Macias Parra, Khalid Al-Mazrou, Gerhard Grevers, Pio Lopez, Laura Naranjo, Felix Pumarola, Nuntigar Sonsuwan, William P Hausdorff
BACKGROUND: Acute otitis media (AOM) is an important cause of childhood morbidity and antibiotic prescriptions. However, the relative importance of the well-known otopathogens, Streptococcus pneumoniae (Spn) and Haemophilus influenzae (Hflu), remains unclear due to a limited number of tympanocentesis-based studies that vary significantly in populations sampled, case definitions, and heptavalent pneumococcal conjugate vaccine (PCV7-CRM) use. METHODS: We conducted a pooled analysis of results from ten AOM etiology studies of similar design the protocols of which were derived from a common protocol and conducted in children 3 months to 5 years of age in different countries...
November 30, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27917707/management-of-pneumonia-in-the-pediatric-critical-care-unit-an-area-for-antimicrobial-stewardship
#2
Aimee M Dassner, David P Nicolau, Jennifer E Girotto
Pediatric pneumonia is one of the most common causes of childhood infection requiring hospitalization and is a substantial driver of antimicrobial use among hospitalized children. About 12-20% of pediatric patients hospitalized with community-acquired pneumonia (CAP) require critical care. Additionally, nosocomial pneumonias (i.e. hospital-acquired and ventilator-associated pneumonias) are responsible for 15-53% of hospital-associated infections and are the most common indication for empiric antibiotics in the pediatric intensive care unit...
December 4, 2016: Current Pediatric Reviews
https://www.readbyqxmd.com/read/27917346/neonatal-bacterial-meningitis-in-tikur-anbessa-specialized-hospital-ethiopia-a-10-year-retrospective-review
#3
Melese Abate Reta, Tamrat Abebe Zeleke
BACKGROUND: Bacterial meningitis is still a major public health threat in developing countries. It is an overwhelming infection with a high morbidity and mortality rate, especially in neonates. The aim of this study was to determine the prevalence and etiological agents that cause bacterial neonatal meningitis at Tikur Anbessa Specialized Hospital (TASH). METHODS: This is a retrospective analysis of 1189 cerebrospinal fluid (CSF) specimens submitted to the bacteriology laboratory of TASH for culture from 2001 to 2010...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27909896/detection-of-shigella-sonnei-in-a-respiratory-specimen-in-a-patient-with-subacute-atypical-pneumonia
#4
Hiwa Nahid, Désirée Staub, Herbert Hächler, Werner C Albrich
BACKGROUND: Pneumonia caused by shigellosis with or without typical dysentery in immunocompetent patients is an uncommon entity. CASE REPORT: We describe a case of pneumonia in an immunocompetent, previously healthy middle-aged man from Switzerland without relevant travel history which was presumably caused by Shigella sonnei. He was originally admitted for suspected lung cancer. The clinical picture was remarkable as the patient presented with cough and purulent sputum production, but otherwise no classical signs of pneumonia...
December 1, 2016: Infection
https://www.readbyqxmd.com/read/27899093/microbiological-profile-of-corneal-ulcer-cases-diagnosed-in-a-tertiary-care-ophthalmological-institute-in-nepal
#5
Sharmila Suwal, Dinesh Bhandari, Pratigya Thapa, Mohan Krishna Shrestha, Jyoti Amatya
BACKGROUND: Corneal ulcer, a major cause of monocular blindness in developing countries has consistently been listed as the major cause of blindness and visual disability in many of the developing nations in Asia, Africa and the Middle East, ranking second only to cataract. This study was carried out to determine the microbiological profile of corneal ulcer cases diagnosed among patients visiting Tilganga Institute of Ophthalmology (TIO), Nepal. METHODS: A total of 101 corneal scrapping samples were tested for routine culture and antibiotic susceptibility at the pathology department of TIO Nepal from April to October 2014...
November 29, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27895000/severe-acute-otitis-media-and-acute-mastoiditis-in-adults
#6
Anu Laulajainen Hongisto, Jussi Jero, Antti Markkola, Riste Saat, Antti A Aarnisalo
OBJECTIVE: To evaluate and compare clinical and microbiological findings in adults hospitalized for acute otitis media (AOM) or mastoid infections (acute or latent). MATERIALS AND METHODS: We retrospectively reviewed the medical records of all adults (≥17 years old) hospitalized (between 2003 and 2012) at a tertiary referral center for acute mastoid infections or AOM not responding to outpatient medical treatment. RESULTS: Of the 160 patients in the study sample, 19% had an infection caused by S...
November 28, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27894820/quantitative-detection-of-periodontopathic-bacteria-in-lower-respiratory-tract-specimens-by-real-time-pcr
#7
Kentaro Nagaoka, Katsunori Yanagihara, Yosuke Harada, Koichi Yamada, Yohei Migiyama, Yoshitomo Morinaga, Koichi Izumikawa, Shigeru Kohno
The presence of common periodontopathic bacteria, the Fusobacterium nucleatum-periodonticum-simiae group, Prevotella intermedia, and Porphyromonas gingivalis was determined from respiratory tract specimens of bacterial pneumonia by real-time PCR using universal and species-specific TaqMan probe/primer sets. 42 patients with infectious pneumonia and 45 patients without infectious pneumonia were retrospectively enrolled in clinical studies. Periodontopathic bacterial DNA was found in 57.1% cases of infectious pneumonia and 31...
November 26, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27894280/is-there-any-association-between-sarcoidosis-and-infectious-agents-a-systematic-review-and-meta-analysis
#8
Tiago Esteves, Gloria Aparicio, Vicente Garcia-Patos
BACKGROUND: During the last few years, investigators have debated the role that infectious agents may have in sarcoidosis pathogenesis. With the emergence of new molecular biology techniques, several studies have been conducted; therefore, we performed a meta-analysis in order to better explain this possible association. METHODS: This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement from the Cochrane collaboration guidelines...
November 28, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27892503/trans-translation-is-essential-in-the-human-pathogen-legionella-pneumophila
#9
Romain Brunel, Xavier Charpentier
Trans-translation is a ubiquitous bacterial mechanism for ribosome rescue in the event of translation stalling. Although trans-translation is not essential in several bacterial species, it has been found essential for viability or virulence in a wide range of pathogens. We describe here that trans-translation is essential in the human pathogen Legionella pneumophila, the etiologic agent of Legionnaire's disease (LD), a severe form of nosocomial and community-acquired pneumonia. The ssrA gene coding for tmRNA, the key component of trans-translation, could not be deleted in L...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27885562/respiratory-syncytial-virus-and-influenza-are-the-key-viral-pathogens-in-children-2%C3%A2-years-hospitalized-with-bronchiolitis-and-pneumonia-in-islamabad-pakistan
#10
Uzma Bashir, Nadia Nisar, Yasir Arshad, Muhammad Masroor Alam, Asiya Ashraf, Hajra Sadia, Birjees Mazher Kazi, Syed Sohail Zahoor Zaidi
Pneumonia remains a leading cause of morbidity and mortality in developing countries. Comprehensive surveillance data are needed to review the prevention and control strategies. We conducted active surveillance of acute lower respiratory infections among children aged <2 years hospitalized at two hospitals of Islamabad, Pakistan. Viral etiology was determined using real-time PCR on respiratory specimens collected during March 2011-April 2012. The overall mean age was 7.83 ± 5.25 months while no statistical difference between age or sex distribution of patients with positive and negative viral etiology (p > 0...
November 24, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27880051/multimorbidities-of-asthma-allergies-and-airway-illnesses-in-childhood-chance-or-not-chance
#11
Wei Liu, Chen Huang, Xueying Wang, Jiao Cai, Yu Hu, Zhijun Zou, Louise B Weschler, Li Shen, Jan Sundell
OBJECTIVES: We investigated patterns of multimorbidities among asthma, allergies, and respiratory illnesses in preschool children. We examined lifetime multimorbidities of asthma, allergic rhinitis, eczema, food allergy, pneumonia, and ear infections; and current (in the last year before the survey) multimorbidities of wheeze, dry cough, rhinitis, eczema, and common cold during childhood. We further analyzed whether prevalences of these multimorbidities were due to chance. METHODS: A cross-sectional study was conducted in 72 kindergartens of Shanghai, China...
November 23, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/27875955/detection-the-mycoplasma-pneumonia-in-synovial-fluid-of-children-with-negative-culture-arthritis-a-cross-sectional-study-in-tehran-iran
#12
Samileh Noorbakhsh, Mohammad Reza Shokrollahi, Farideh Ebrahimi Taj, Vida Zarabi, Azardokht Tabatabaei
BACKGROUND: arthritis could be caused by different etiologies ranging from rheumatologic diseases to infectious conditions. Therefore, early diagnosis of etiology and treatment is important. The purpose of this study was to determine the the M.pneumonia in synovial fluid of children with arthritis by 2 methods (serology and qualitative PCR). Methods & materials: this trial was carried out as a cross sectional study in pediatric and orthopedic ward of Rasoul-e Akram hospital in Tehran, Iran...
November 21, 2016: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/27858147/evolution-and-function-of-the-mycoplasma-hyopneumoniae-peroxiredoxin-a-2-cys-like-enzyme-with-a-single-cys-residue
#13
Taylor Gonchoroski, Veridiana G Virginio, Claudia E Thompson, Jéssica A Paes, Cláudio X Machado, Henrique B Ferreira
The minimal genome of the mollicute Mycoplasma hyopneumoniae, the etiological agent of porcine enzootic pneumonia, encodes a limited repertoire of antioxidant enzymes that include a single and atypical peroxiredoxin (MhPrx), whose evolution and function were studied here. MhPrx has only one catalytic cysteine, in contrast with some of its possible ancestors (2-Cys peroxiredoxins), which have two. Although it is more similar to 2-Cys orthologs, MhPrx can still function with a single peroxidatic cysteine (CysP), using non-thiolic electron donors to reduce it...
November 17, 2016: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/27852281/viral-bacterial-coinfection-affects-the-presentation-and-alters-the-prognosis-of-severe-community-acquired-pneumonia
#14
Guillaume Voiriot, Benoit Visseaux, Johana Cohen, Liem Binh Luong Nguyen, Mathilde Neuville, Caroline Morbieu, Charles Burdet, Aguila Radjou, François-Xavier Lescure, Roland Smonig, Laurence Armand-Lefèvre, Bruno Mourvillier, Yazdan Yazdanpanah, Jean-Francois Soubirou, Stephane Ruckly, Nadhira Houhou-Fidouh, Jean-François Timsit
BACKGROUND: Multiplex polymerase chain reaction (mPCR) enables recovery of viruses from airways of patients with community-acquired pneumonia (CAP), although their clinical impact remains uncertain. METHODS: Among consecutive adult patients who had undergone a mPCR within 72 hours following their admission to one intensive care unit (ICU), we retrospectively included those with a final diagnosis of CAP. Four etiology groups were clustered: bacterial, viral, mixed (viral-bacterial) and no etiology...
October 25, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27847519/severe-hyponatremia-due-to-levofloxacin-treatment-for-pseudomonas-aeruginosa-community-acquired-pneumonia-in-a-patient-with-oropharyngeal-cancer
#15
Mihaela Mocan, Sorin Nicu Blaga
Hyponatremia (serum Na levels of <135 mEq/L) is the most common electrolyte imbalance encountered in clinical practice, affecting up to 15-28% of hospitalized patients. This case report refers to a middle-aged man with severe hyponatremia due to Syndrome of Inappropriate Antidiuretic Hormone Secretion related to four possible etiological factors: glossopharyngeal squamous cell carcinoma, cisplatin treatment, right basal pneumonia with Pseudomonas aeruginosa, and the treatment with Levofloxacin. This case report discusses a rare complication of common conditions and of a common treatment...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27847374/multiplex-urinary-antigen-detection-for-13-streptococcus-pneumoniae-serotypes-improves-diagnosis-of-pneumococcal-pneumonia-in-south-african-hiv-infected-adults
#16
Werner C Albrich, Michael W Pride, Shabir A Madhi, Jan Callahan, Peter V Adrian, Roger French, Nadia van Niekerk, Shite Sebastian, Victor Souza, Jean-Noel Telles, Glaucia Paranhos-Baccalà, Kathrin U Jansen, Keith P Klugman
BACKGROUND: A serotype-specific urinary antigen detection assay (UAD) for 13 serotypes included in the pneumococcal conjugate vaccine (PCV13) was recently reported as a useful diagnostic tool for pneumococcal pneumonia. We aimed to assess the diagnostic accuracy of the UAD in HIV-infected South African adults. METHODS: Urine specimens from a well-defined cohort of HIV-infected South African adults with pneumonia were evaluated retrospectively in the UAD assay. Pneumonia was considered pneumococcal if either sputum Gram stain, sputum culture, blood culture or immunochromatographic (ICT) BinaxNow® S...
November 9, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27846213/sensitivity-and-specificity-of-soluble-triggering-receptor-expressed-on-myeloid-cells-1-midregional-proatrial-natriuretic-peptide-and-midregional-proadrenomedullin-for-distinguishing-etiology-and-to-assess-severity-in-community-acquired-pneumonia
#17
Susanna Esposito, Maria Di Gangi, Fabio Cardinale, Eugenio Baraldi, Ilaria Corsini, Liviana Da Dalt, Pier Angelo Tovo, Antonio Correra, Alberto Villani, Oliviero Sacco, Laura Tenero, Piera Dones, Monia Gambino, Alberto Zampiero, Nicola Principi
STUDY DESIGN: This study aimed to evaluate the diagnostic accuracy of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1), midregional proatrial natriuretic peptide (MR-proANP) and midregional proadrenomedullin (MR-proADM) to distinguish bacterial from viral community-acquired pneumonia (CAP) and to identify severe cases in children hospitalized for radiologically confirmed CAP. Index test results were compared with those derived from routine diagnostic tests, i.e., white blood cell (WBC) counts, neutrophil percentages, and serum C-reactive protein (CRP) and procalcitonin (PCT) levels...
2016: PloS One
https://www.readbyqxmd.com/read/27837008/transcriptional-categorization-of-the-etiology-of-pneumonia-syndrome-in-pediatric-patients-in-malaria-endemic-areas
#18
Jacob Silterra, Michael A Gillette, Miguel Lanaspa, Karell G Pellé, Clarissa Valim, Rushdy Ahmad, Sozinho Acácio, Katherine D Almendinger, Yan Tan, Lola Madrid, Pedro L Alonso, Steven A Carr, Roger C Wiegand, Quique Bassat, Jill P Mesirov, Danny A Milner, Dyann F Wirth
BACKGROUND:  Pediatric acute respiratory distress in tropical settings is very common. Bacterial pneumonia is a major contributor to morbidity and mortality and requires adequate diagnosis for correct treatment. A rapid test that could identify bacterial (vs. other) infections would have great clinical utility. METHODS AND FINDINGS:  We performed RNA-Seq and analyzed the transcriptomes of 68 pediatric patients with well-characterized clinical phenotype to identify transcriptional features associated with each disease class...
November 10, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27835759/zika-virus-epidemic-in-brazil-i-fatal-disease-in-adults-clinical-and-laboratorial-aspects
#19
Raimunda S S Azevedo, Marialva T Araujo, Arnaldo J Martins Filho, Consuelo S Oliveira, Bruno T D Nunes, Ana C R Cruz, Ana G P A C Nascimento, Rita C Medeiros, Cezar A M Caldas, Fernando C Araujo, Juarez A S Quaresma, Barbara C B Vasconcelos, Maria G L Queiroz, Elizabeth S Travassos da Rosa, Daniele F Henriques, Eliana V P Silva, Jannifer O Chiang, Lívia C Martins, Daniele B A Medeiros, Juliana A Lima, Márcio R T Nunes, Jedson F Cardoso, Sandro P Silva, Pei-Yong Shi, Robert B Tesh, Sueli G Rodrigues, Pedro F C Vasconcelos
BACKGROUND: Zika virus (ZIKV) was first detected in Brazil in May 2015 and the country experienced an explosive epidemic. However, recent studies indicate that the introduction of ZIKV occurred in late 2013. Cases of microcephaly and deaths associated with ZIKV infection were identified in Brazil in November, 2015. OBJECTIVES: To determine the etiology of three fatal adult cases. STUDY DESIGN: Here we report three fatal adult cases of ZIKV disease...
December 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27832918/changes-in-empyema-among-u-s-children-in-the-pneumococcal-conjugate-vaccine-era
#20
Andrew D Wiese, Marie R Griffin, Yuwei Zhu, Edward F Mitchel, Carlos G Grijalva
BACKGROUND: Parapneumonic empyema, a serious complication of pneumonia, started increasing among U.S. children before the introduction of the 7-valent pneumococcal conjugate vaccine (PCV7) in 2000, and continued afterwards. This increase was due in part to pneumococcal serotypes not included in PCV7 that were included in the new 13-valent (PCV13) vaccine introduced in 2010. We assessed changes in the incidence of empyema hospitalizations among U.S. children after PCV13 introduction. METHODS: We calculated annualized empyema hospitalization rates among U...
December 7, 2016: Vaccine
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