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https://www.readbyqxmd.com/read/28093834/seasonality-of-pathogens-causing-community-acquired-pneumonia
#1
Catia Cilloniz, Santiago Ewig, Albert Gabarrus, Miquel Ferrer, Jorge Puig de la Bella Casa, Josep Mensa, Antoni Torres
BACKGROUND AND OBJECTIVE: Seasonal distribution of microbial aetiology in patients with community-acquired pneumonia (CAP) may add important information both for epidemiologists and clinicians. We investigate the seasonal distribution of microbial aetiology in CAP. METHODS: This prospective observational study was carried out in the Hospital Clinic of Barcelona, Spain (January 2003-December 2014). RESULTS: We studied 4431 patients with CAP, of whom 2689 (61%) were males...
January 17, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28024955/pregnancy-as-a-risk-factor-for-severe-outcomes-from-influenza-virus-infection-a-systematic-review-and-meta-analysis-of-observational-studies
#2
REVIEW
Dominik Mertz, Johanna Geraci, Judi Winkup, Bradford D Gessner, Justin R Ortiz, Mark Loeb
BACKGROUND: Pregnancy is considered to be an important risk factor for severe complications following influenza virus infection. As a consequence, WHO recommendations prioritize pregnant women over other risk groups for influenza vaccination. However, the risk associated with pregnancy has not been systematically quantified. PURPOSE: Systematic review and meta-analysis of observational studies that reported on pregnancy as a risk factor for severe outcomes from influenza virus infection...
December 23, 2016: Vaccine
https://www.readbyqxmd.com/read/28011920/nasopharyngeal-pneumococcal-carriage-during-childhood-community-acquired-alveolar-pneumonia-relationship-between-specific-serotypes-and-co-infecting-viruses
#3
David Greenberg, Noga Givon-Lavi, Yaniv Fainguelernt, Shalom Ben-Shimol, Yonat Shemer Avni, Jacob Bar-Ziv, Ron Dagan
BACKGROUND: Respiratory viruses and S. pneumoniae are known to be co-pathogens in childhood pneumonia. However, it is unclear whether all pneumococcal serotypes are equally prone to such interaction. We attempted to determine association between carried pneumococcal serotypes and respiratory viruses during childhood community-acquired alveolar pneumonia (CAAP). METHODS: The study was conducted during RSV seasons, before pneumococcal vaccine introduction. Children <5 years diagnosed with CAAP, with positive pneumococcal nasopharyngeal cultures from whom viral diagnostic tests were obtained were enrolled...
December 23, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27992067/the-role-of-rhinoviruses-is-over-estimated-in-the-aetiology-of-community-acquired-pneumonia-in-children
#4
Matti Korppi
Until the 1990s, viral cultures, antigen detection and antibody assays were used to diagnose virus-specific respiratory infections (1). The introduction of polymerase chain reaction (PCR) increased the number of viral findings, revealed that multiple viral aetiological findings are common, confirmed that viruses are often found in non-symptomatic children and even detected new viruses (2-4). Rhinoviruses were discovered in 1956, but the slow, non-sensitive viral culture was the only diagnostic method for decades and the development of antigen or antibody assays did not help, as there are now more than 100 rhinovirus serotypes...
December 19, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27960210/community-acquired-pneumonia-in-latin-america
#5
Hernán A Iannella, Carlos M Luna
Community-acquired pneumonia (CAP) is associated with significant morbidity and mortality in Latin America and the Caribbean (LAC) region. Poverty, socioeconomic factors, and malnutrition influence the incidence and outcome of CAP in LAC. In LAC, Streptococcus pneumoniae is the most frequent microorganism responsible for CAP, (incidence: 24-78%); the incidence of atypical microorganisms is similar to other regions of the world. Human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) is a growing problem in the LAC region, with the Caribbean being the second most affected area worldwide after Sub-Saharan Africa...
December 2016: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27960209/community-acquired-pneumonia-in-sub-saharan-africa
#6
Stephen J Aston, Jamie Rylance
Community-acquired pneumonia (CAP) in sub-Saharan Africa is a common cause of adult hospitalization and is associated with significant mortality. Human immunodeficiency virus (HIV) prevalence in the region leads to differences in CAP epidemiology compared with most high-income settings: patients are younger, and coinfection with tuberculosis and opportunistic infections is common and difficult to diagnose. Resource limitations affect the availability of medical expertise as well as radiological and laboratory diagnostic services...
December 2016: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27960208/community-acquired-pneumonia-in-the-asia-pacific-region
#7
Jae-Hoon Song, Kyungmin Huh, Doo Ryeon Chung
Community-acquired pneumonia (CAP) is an important cause of mortality and morbidity worldwide. Aging population, dense urbanization, and poor access to health care make the Asia-Pacific region vulnerable to CAP. The high incidence of CAP poses a significant health and economic burden in this region. Common etiologic agents in other global regions including Streptococcus pneumoniae, Mycoplasma pneumoniae, Haemophilus influenzae, Chlamydophila pneumoniae, Staphylococcus aureus, and respiratory viruses are also the most prevalent pathogens in the Asia-Pacific region...
December 2016: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27943624/temporal-cross-correlation-between-influenza-like-illnesses-and-invasive-pneumococcal-disease-in-the-netherlands
#8
Wilke Hendriks, Hendriek Boshuizen, Arnold Dekkers, Mirjam Knol, Ge A Donker, Arie van der Ende, Hester Korthals Altes
BACKGROUND: While the burden of community-acquired pneumonia and invasive pneumococcal disease (IPD) is still considerable, there is little insight in the factors contributing to disease. Previous research on the lagged relationship between respiratory viruses and pneumococcal disease incidence is inconclusive, and studies correcting for temporal autocorrelation are lacking. OBJECTIVES: To investigate the temporal relation between influenza-like illnesses (ILI) and IPD, correcting for temporal autocorrelation...
December 10, 2016: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/27922126/viral-and-bacterial-co-infection-in-severe-pneumonia-triggers-innate-immune-responses-and-specifically-enhances-ip-10-a-translational-study
#9
Jonathan Hoffmann, Daniela Machado, Olivier Terrier, Stephane Pouzol, Mélina Messaoudi, Wilma Basualdo, Emilio E Espínola, Rosa M Guillen, Manuel Rosa-Calatrava, Valentina Picot, Thomas Bénet, Hubert Endtz, Graciela Russomando, Gláucia Paranhos-Baccalà
Mixed viral and bacterial infections are widely described in community-acquired pneumonia; however, the clinical implications of co-infection on the associated immunopathology remain poorly studied. In this study, microRNA, mRNA and cytokine/chemokine secretion profiling were investigated for human monocyte-derived macrophages infected in-vitro with Influenza virus A/H1N1 and/or Streptococcus pneumoniae. We observed that the in-vitro co-infection synergistically increased interferon-γ-induced protein-10 (CXCL10, IP-10) expression compared to the singly-infected cells conditions...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27852281/viral-bacterial-coinfection-affects-the-presentation-and-alters-the-prognosis-of-severe-community-acquired-pneumonia
#10
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/27848998/fatal-community-acquired-pneumonia-in-children-caused-by-re-emergent-human-adenovirus-7d-associated-with-higher-severity-of-illness-and-fatality-rate
#11
Zhiwu Yu, Zhiwei Zeng, Jing Zhang, Yuxian Pan, Manjun Chen, Yonghui Guo, Nan Yu, James Chodosh, Ning Fu, Xiaoyan Che, Qiwei Zhang
Human adenoviruses (HAdVs) are highly contagious pathogens causing acute respiratory disease (ARD), such as community-acquired pneumonia. HAdV-7d, a re-emergent genomic variant, has been recently reported in Asia and the United States after a several-decade absence. However, whether HAdV-7d is associated with higher severity than other types is currently unclear. In this study, the clinical and epidemiological investigation showed that fever, cough, and sore throat were the three most common respiratory symptoms of HAdV infections...
November 16, 2016: Scientific Reports
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
#12
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/27795341/serology-enhances-molecular-diagnosis-of-respiratory-virus-infections-other-than-influenza-in-children-and-adults-hospitalized-with-community-acquired-pneumonia
#13
Yange Zhang, Senthilkumar K Sakthivel, Anna Bramley, Seema Jain, Amber Haynes, James D Chappell, Weston Hymas, Noel Lenny, Anami Patel, Chao Qi, Krow Ampofo, Sandra R Arnold, Wesley H Self, Derek J Williams, David Hillyard, Evan J Anderson, Carlos G Grijalva, Yuwei Zhu, Richard G Wunderink, Kathryn M Edwards, Andrew T Pavia, Jonathan A McCullers, Dean D Erdman
Both molecular and serological assays have been used previously to determine the etiology of community-acquired pneumonia (CAP). However, the extent to which these methods are correlated and the added diagnostic value of serology for respiratory viruses other than influenza virus have not been fully evaluated. Using data from patients enrolled in the Centers for Disease Control and Prevention (CDC) Etiology of Pneumonia in the Community (EPIC) study, we compared real-time reverse transcription-PCR (RT-PCR) and serology for the diagnosis of respiratory syncytial virus (RSV), human metapneumovirus (HMPV), parainfluenza virus 1 to 3 (PIV1, PIV2, and PIV3), and adenovirus (AdV) infections...
January 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27788254/microorganisms-causing-community-acquired-acute-bronchitis-the-role-of-bacterial-infection
#14
Ji Young Park, Sunghoon Park, Sun Hwa Lee, Myung Goo Lee, Yong Bum Park, Kil Chan Oh, Jae-Myung Lee, Do Il Kim, Ki-Hyun Seo, Kyeong-Cheol Shin, Kwang Ha Yoo, Yongchun Ko, Seung Hun Jang, Ki-Suck Jung, Yong Il Hwang
BACKGROUND: Although acute bronchitis is quite common, there is relatively limited information regarding the microorganisms that are involved in this illness. METHODS: We performed a prospective study of acute bronchitis at 31 hospitals and clinics in Korea from July 2011 to June 2012. Sputum specimens were collected for polymerase chain reaction (PCR) and culture of microorganisms. RESULTS: Of the 811 enrolled patients, 291 had acceptable sputum specimens that were included for analysis of the etiologic distribution...
2016: PloS One
https://www.readbyqxmd.com/read/27773623/-increasing-incidence-of-community-acquired-pneumonia-caused-by-atypical-microorganisms
#15
M A Tazón-Varela, H Alonso-Valle, P Muñoz-Cacho, J Gallo-Terán, X Piris-García, L A Pérez-Mier
INTRODUCTION: Knowing the most common microorganisms in our environment can help us to make proper empirical treatment decisions. The aim is to identify those microorganisms causing community-acquired pneumonia. PATIENTS AND METHODS: An observational, descriptive and prospective study was conducted, including patients over 14 years with a clinical and radiographic diagnosis of community-acquired pneumonia during a 383 consecutive day period. A record was made of sociodemographic variables, personal history, prognostic severity scales, progress, and pathogenic agents...
October 20, 2016: Semergen
https://www.readbyqxmd.com/read/27766169/microbial-etiology-of-community-acquired-pneumonia-among-infants-and-children-admitted-to-the-pediatric-hospital-ain-shams-university
#16
Magda Yehia El Seify, Eman Mahmoud Fouda, Hanan Mohamed Ibrahim, Maha Muhammad Fathy, Asmaa Al Husseiny Ahmed, Walaa Shawky Khater, Noha Nagi Mohammed Salah El Deen, Heba Galal Mohamed Abouzeid, Nancy Riyad Ahmed Hegazy, Heba Salah Sayed Elbanna
BACKGROUND: While recognizing the etiology of community-acquired pneumonia is necessary for formulating local antimicrobial guidelines, limited data is published about this etiology in Egyptian pediatric patients. OBJECTIVES: To determine the frequency of bacterial and viral pathogens causing community-acquired pneumonia (CAP) among immunocompetent Egyptian infants and preschool children. METHODS: Ninety infants and preschool-age children admitted to our hospital with CAP were prospectively included in the study...
September 29, 2016: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/27757026/vitamin-e-administration-may-decrease-the-incidence-of-pneumonia-in-elderly-males
#17
Harri Hemilä
BACKGROUND: Vitamin E has influenced the immune system in laboratory studies. Dozens of animal experiments have found that vitamin E offered protection against infections caused by viruses and bacteria. Previously, significant heterogeneity was found in the effect of vitamin E supplementation on pneumonia in humans. The aim of this study was to examine how the effect of vitamin E on pneumonia risk depends on age. METHODS: Secondary analysis of the Alpha-Tocopherol, Beta-Carotene Cancer Prevention study in Finland, 1985-1993, was performed...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27755118/community-acquired-pneumonia-in-the-post-13-valent-pneumococcal-conjugate-vaccine-era
#18
Erin E Shaughnessy, Erika L Stalets, Samir S Shah
PURPOSE OF REVIEW: This review covers the outpatient management of pediatric community-acquired pneumonia (CAP), discussing the changing microbiology of CAP since the introduction of the 13-valent pneumococcal conjugate vaccine in 2010, and providing an overview of national guideline recommendations for diagnostic evaluation and treatment. RECENT FINDINGS: Rates of invasive pneumococcal disease and pneumococcal antibiotic resistance have plummeted since widespread 13-valent pneumococcal conjugate vaccine immunization...
December 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27737646/maternal-vitamin-d-supplementation-during-pregnancy-and-lactation-to-prevent-acute-respiratory-infections-in-infancy-in-dhaka-bangladesh-mdari-trial-protocol-for-a-prospective-cohort-study-nested-within-a-randomized-controlled-trial
#19
Shaun K Morris, Lisa G Pell, Mohammed Ziaur Rahman, Michelle C Dimitris, Abdullah Mahmud, M Munirul Islam, Tahmeed Ahmed, Eleanor Pullenayegum, Tahmid Kashem, Shaila S Shanta, Jonathan Gubbay, Eszter Papp, Michelle Science, Stanley Zlotkin, Daniel E Roth
BACKGROUND: Early infancy is a high-risk period for severe acute respiratory infection (ARI), particularly in low-income countries with resource-limited health systems. Lower respiratory tract infection (LRTI) is commonly preceded by upper respiratory infection (URTI), and often caused by respiratory syncytial virus (RSV), influenza and other common community-acquired viral pathogens. Vitamin D status is a candidate modifiable early-life determinant of the host antiviral immune response and thus may influence the risk of ARI-associated morbidity in high-risk populations...
October 13, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27714467/is-the-role-of-rhinoviruses-as-causative-agents-of-pediatric-community-acquired-pneumonia-over-estimated
#20
Tatyana V Spichak, Svetlana B Yatsyshina, Lubov К Кatosova, Svetlana S Кim, Matti O Korppi
: The role that rhinoviruses, enteroviruses, parainfluenza viruses, coronaviruses and human bocavirus play in pediatric pneumonia is insufficiently studied. We used polymerase chain reaction (PCR) to study 9 virus groups, including 16 different viruses or viral strains, in 56 ambulatory children with radiologically confirmed community-acquired pneumonia (CAP). The same tests were carried out on 474 apparently healthy control children of the same age and sex. The mean age of children with CAP was 6...
December 2016: European Journal of Pediatrics
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