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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
#1
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/27873511/human-coronavirus-in-the-2014-winter-season-as-a-cause-of-lower-respiratory-tract-infection
#2
Kyu Yeun Kim, Song Yi Han, Ho Seong Kim, Hyang Min Cheong, Sung Soon Kim, Dong Soo Kim
PURPOSE: During the late autumn to winter season (October to December) in the Republic of Korea, respiratory syncytial virus (RSV) is the most common pathogen causing lower respiratory tract infections (LRTIs). Interestingly, in 2014, human coronavirus (HCoV) caused not only upper respiratory infections but also LRTIs more commonly than in other years. Therefore, we sought to determine the epidemiology, clinical characteristics, outcomes, and severity of illnesses associated with HCoV infections at a single center in Korea...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27850571/933-associations-between-pneumonia-and-clinical-outcomes-in-picu-patients-with-rsv-bronchiolitis
#3
Steven Shein, Michele Kong, Bryan McKee, Maryann O'Riordan, Adrienne Randolph
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27805553/-monoinfection-of-human-metapneumovirus-in-cordoba-first-clinical-and-epidemiological-research-in-children-with-respiratory-infection-in-2011
#4
Pamela Elizabeth Rodriguez, María Pilar Adamo, María Gabriela Paglini, Laura Moreno, Jorge Augusto Camara, Alicia Camara
: Human metapneumovirus (hMPV) RNA virus discovered in 2001, is a pathogen associated with acute respiratory infection (ARI) in children under 5 years; its prevalence ranges from 5-15%. In Córdoba, it is not integrated into the viral research in patients with low IRA (LARI). OBJECTIVE: Detect hMPV in children under 5 years hospitalized for LARI in the Children's Hospital "Santísima Trinidad" of Cordoba (HNC) in 2011 and describe the clinical and epidemiological characteristics of monoinfecciones without comorbidity...
2016: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/27798551/risk-factors-for-virus-induced-acute-respiratory-tract-infections-in-children-younger-than-3-years-and-recurrent-wheezing-at-36-months-follow-up-after-discharge
#5
Ambra Nicolai, Antonella Frassanito, Raffaella Nenna, Giulia Cangiano, Laura Petrarca, Paola Papoff, Alessandra Pierangeli, Carolina Scagnolari, Corrado Moretti, Fabio Midulla
BACKGROUND: We sought to know more about how 14 common respiratory viruses manifest clinically, and to identify risk factors for specific virus-induced acute respiratory tract infections (ARTIs) in children younger than 3 years and for wheezing at 36-months follow-up. METHODS: We retrospectively studied the clinical records for 273 full-term children (median age, 2.9 months, range 0.26-39, boys 61.2%) hospitalized for ARTIs whose nasopharyngeal specimen tested positive for a respiratory virus and 101 children with no history of respiratory diseases (median age, 8 months, range: 0...
October 27, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27793398/novel-expression-of-a-functional-trimeric-fragment-of-human-sp-a-with-efficacy-in-neutralisation-of-rsv
#6
Alastair Watson, Nina Kronqvist, C Mirella Spalluto, Mark Griffiths, Karl J Staples, Tom Wilkinson, Uffe Holmskov, Grith L Sorensen, Anna Rising, Jan Johansson, Jens Madsen, Howard Clark
Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and hospitalisation of infants in developed countries. Surfactant protein A (SP-A) is an important innate immune molecule, localized in pulmonary surfactant. SP-A binds to carbohydrates on the surface of pathogens in a calcium-dependent manner to enable neutralisation, agglutination and clearance of pathogens including RSV. SP-A forms trimeric units and further oligomerises through interactions between its N-terminal domains. Whilst a recombinant trimeric fragment of the closely related molecule (surfactant protein D) has been shown to retain many of the native protein's functions, the importance of the SP-A oligomeric structure in its interaction with RSV has not been determined...
October 18, 2016: Immunobiology
https://www.readbyqxmd.com/read/27764220/epidemiology-and-clinical-presentations-of-respiratory-syncytial-virus-subgroups-a-and-b-detected-with-multiplex-real-time-pcr
#7
Wenkuan Liu, Dehui Chen, Weiping Tan, Duo Xu, Shuyan Qiu, Zhiqi Zeng, Xiao Li, Rong Zhou
Respiratory syncytial virus (RSV) is one of the most important pathogenic infections of children and requires in-depth research worldwide, and especially in developing countries. We used a novel multiplex real-time PCR to test 5483 patients (≤ 14 years old) hospitalized with respiratory illness in Guangzhou, China, over a 3-year period. Of these patients, 729 were positive for RSV-A (51.2%, 373/729) or RSV-B (48.8%, 356/729), but none was infected with both viruses. Two seasonal peaks in total RSV were detected at the changes from winter to spring and from summer to autumn...
2016: PloS One
https://www.readbyqxmd.com/read/27721865/retrospective-multicenter-study-of-respiratory-syncytial-virus-prophylaxis-in-korean-children-with-congenital-heart-diseases
#8
Ah Young Kim, Se Yong Jung, Jae Young Choi, Gi Beom Kim, Young-Hwue Kim, Woo Sup Shim, I-Seok Kang, Jo Won Jung
BACKGROUND AND OBJECTIVES: We conducted a review of current data on respiratory syncytial virus (RSV) prophylaxis with palivizumab, in Korean children with congenital heart diseases (CHD). In 2009, the Korean guideline for RSV prophylaxis had established up to five shots monthly per RSV season, only for children <1 year of age with hemodynamic significance CHD (HS-CHD). SUBJECTS AND METHODS: During the RSV seasons in 2009-2015, we performed a retrospective review of data for 466 infants with CHD, examined at six centers in Korea...
September 2016: Korean Circulation Journal
https://www.readbyqxmd.com/read/27716828/retrospective-parameter-estimation-and-forecast-of-respiratory-syncytial-virus-in-the-united-states
#9
Julia Reis, Jeffrey Shaman
Recent studies have shown that systems combining mathematical modeling and Bayesian inference methods can be used to generate real-time forecasts of future infectious disease incidence. Here we develop such a system to study and forecast respiratory syncytial virus (RSV). RSV is the most common cause of acute lower respiratory infection and bronchiolitis. Advanced warning of the epidemic timing and volume of RSV patient surges has the potential to reduce well-documented delays of treatment in emergency departments...
October 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27696460/genetic-variability-of-respiratory-syncytial-virus-a-in-hospitalized-children-in-the-last-five-consecutive-winter-seasons-in-central-spain
#10
Ana Calderón, Francisco Pozo, Cristina Calvo, Mluz García-García, Mónica González-Esguevillas, Mar Molinero, Inmaculada Casas
Human respiratory syncytial virus group A (RSV-A) was detected in symptomatic hospital attended children in Central Spain for a continuous time period, September 2010 to April 2015. In order to accurately describe the epidemiology of this virus, the genetic diversity of the complete G gene and the clinical manifestations observed were jointly analyzed. Out of 3,011 respiratory specimens taken from 2,308 children, 640 were positive to RSV (21.3%) and 405 were RSV-A (63.2%). Complete G gene sequences of 166 randomly selected RSV-A virus identified NA1 and ON1 genotypes...
October 3, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27694633/a-randomized-controlled-observer-blind-phase-i-study-of-the-safety-and-immunogenicity-of-a-respiratory-syncytial-virus-vaccine-with-or-without-alum-adjuvant
#11
Joanne M Langley, Naresh Aggarwal, Azhar Toma, Scott A Halperin, Shelly A McNeil, Laurence Fissette, Walthere Dewé, Maarten Leyssen, Jean-François Toussaint, Ilse Dieussaert
BACKGROUND:  RSV is a leading cause of childhood bronchiolitis and pneumonia, particularly in early infancy. Immunization of pregnant women could boost pre-existing immune responses, providing passive protection to the newborn through placental transfer of anti-RSV antibody. METHODS:  In this first-in-humans clinical trial of a purified recombinant RSV protein F vaccine engineered to preferentially maintain pre-fusion conformation (RSV-PreF), 128 healthy men 18-44 years old were randomized to one dose of a RSV-PreF vaccine containing 10, 30 or 60 µg of RSV-PreF antigen with or without alum adjuvant, or control, and followed for one year for safety and immunogenicity outcomes...
September 29, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27632796/clinical-characteristics-and-viral-load-of-respiratory-syncytial-virus-and-human-metapneumovirus-in-children-hospitalized-for-acute-lower-respiratory-tract-infection
#12
Xiao-Li Yan, Yu-Ning Li, Yi-Jie Tang, Zhi-Ping Xie, Han-Chun Gao, Xue-Mei Yang, Yu-Mei Li, Li-Jun Liu, Zhao-Jun Duan
Respiratory syncytial virus (RSV) and human metapneumovirus (HMPV) are two common viral pathogens in acute lower respiratory tract infections (ALRTI). However, the association of viral load with clinical characteristics is not well-defined in ALRTI. To explore the correlation between viral load and clinical characteristics of RSV and HMPV in children hospitalized for ALRTI in Lanzhou, China. 387 children hospitalized for ALRTI were enrolled. Nasopharyngeal aspirates (NPAs) were sampled from each children. Real-time PCR was used to screen RSV, HMPV and twelve additional respiratory viruses...
September 15, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27581977/packaging-and-prefusion-stabilization-separately-and-additively-increase-the-quantity-and-quality-of-respiratory-syncytial-virus-rsv-neutralizing-antibodies-induced-by-an-rsv-fusion-protein-expressed-by-a-parainfluenza-virus-vector
#13
Bo Liang, Joan O Ngwuta, Richard Herbert, Joanna Swerczek, David W Dorward, Emerito Amaro-Carambot, Natalie Mackow, Barbora Kabatova, Matthias Lingemann, Sonja Surman, Lijuan Yang, Man Chen, Syed M Moin, Azad Kumar, Jason S McLellan, Peter D Kwong, Barney S Graham, Anne Schaap-Nutt, Peter L Collins, Shirin Munir
: Human respiratory syncytial virus (RSV) and human parainfluenza virus type 3 (HPIV3) are major pediatric respiratory pathogens that lack vaccines. A chimeric bovine/human PIV3 (rB/HPIV3) virus expressing the unmodified, wild-type (wt) RSV fusion (F) protein from an added gene was previously evaluated in seronegative children as a bivalent intranasal RSV/HPIV3 vaccine, and it was well tolerated but insufficiently immunogenic for RSV F. We recently showed that rB/HPIV3 expressing a partially stabilized prefusion form (pre-F) of RSV F efficiently induced "high-quality" RSV-neutralizing antibodies, defined as antibodies that neutralize RSV in vitro without added complement (B...
November 1, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27573216/incidence-of-respiratory-disease-during-the-first-two%C3%A2-years-of-life-in-children-with-hemodynamically-significant-congenital-heart-disease-in-italy-a-retrospective-study
#14
Giacomo Pongiglione, Alessandro Possidoni, Umberto di Luzio Paparatti, Anna Maria Costanzo, Giuliana Gualberti, Marco Bonvicini, Alessandro Rimini, Gabriella Agnoletti, Maria Pia Calabrò, Marco Pozzi, Roberto Tumbarello, Patrizia Salice, Patrizio Fiorini, Maria Giovanna Russo, Ornella Milanesi
Children affected by hemodynamically significant congenital heart disease (HSCHD) experience severe respiratory complications that can increase the frequency of hospitalizations. The aim of the SINERGY study was to describe the incidence of respiratory diseases and to collect information on active and passive immunoprophylaxis in the first 2 years of life. In this retrospective, multicenter, and epidemiologic study, children with HSCHD were enrolled across 11 Italian sites. Children born between December 31, 2007, and December 31, 2012, were observed during their first 2 years of life...
December 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27560829/the-helminth-derived-immunomodulator-avcystatin-reduces-virus-enhanced-inflammation-by-induction-of-regulatory-il-10-t-cells
#15
Martijn J Schuijs, Susanne Hartmann, Murray E Selkirk, Luke B Roberts, Peter J M Openshaw, Corinna Schnoeller
Respiratory Syncytial Virus (RSV) is a major pathogen causing low respiratory tract disease (bronchiolitis), primarily in infants. Helminthic infections may alter host immune responses to both helminths and to unrelated immune triggers. For example, we have previously shown that filarial cystatin (AvCystatin/Av17) ameliorates allergic airway inflammation. However, helminthic immunomodulators have so far not been tested in virus-induced disease. We now report that AvCystatin prevents Th2-based immunopathology in vaccine-enhanced RSV lung inflammation, a murine model for bronchiolitis...
2016: PloS One
https://www.readbyqxmd.com/read/27556405/association-of-a-pai-1-gene-polymorphism-and-early-life-infections-with-asthma-risk-exacerbations-and-reduced-lung-function
#16
Seong H Cho, Jin-Young Min, Dong Young Kim, Sam S Oh, Dara R Torgerson, Maria Pino-Yanes, Donglei Hu, Saunak Sen, Scott Huntsman, Celeste Eng, Harold J Farber, William Rodriguez-Cintron, Jose R Rodriguez-Santana, Denise Serebrisky, Shannon M Thyne, Luisa N Borrell, L Keoki Williams, William DuPont, Max A Seibold, Esteban G Burchard, Pedro C Avila, Rajesh Kumar
BACKGROUND: Plasminogen activator inhibitor-1 (PAI-1) is induced in airways by virus and may mediate asthmatic airway remodeling. We sought to evaluate if genetic variants and early life lower respiratory infections jointly affect asthma risk. METHODS: We included Latino children, adolescents, and young adults aged 8-21 years (1736 subjects with physician-diagnosed asthma and 1747 healthy controls) from five U.S. centers and Puerto Rico after excluding subjects with incomplete clinical or genetic data...
2016: PloS One
https://www.readbyqxmd.com/read/27554839/determinants-of-host-susceptibility-to-murine-respiratory-syncytial-virus-rsv-disease-identify-a-role-for-the-innate-immunity-scavenger-receptor-marco-gene-in-human-infants
#17
Monica High, Hye-Youn Cho, Jacqui Marzec, Tim Wiltshire, Kirsten C Verhein, Mauricio T Caballero, Patricio L Acosta, Jonathan Ciencewicki, Zackary R McCaw, Lester Kobzik, Laura Miller-DeGraff, Wes Gladwell, David B Peden, M Elina Serra, Min Shi, Clarice Weinberg, Oscar Suzuki, Xuting Wang, Douglas A Bell, Fernando P Polack, Steven R Kleeberger
BACKGROUND: Respiratory syncytial virus (RSV) is the global leading cause of lower respiratory tract infection in infants. Nearly 30% of all infected infants develop severe disease including bronchiolitis, but susceptibility mechanisms remain unclear. METHODS: We infected a panel of 30 inbred strains of mice with RSV and measured changes in lung disease parameters 1 and 5days post-infection and they were used in genome-wide association (GWA) studies to identify quantitative trait loci (QTL) and susceptibility gene candidates...
September 2016: EBioMedicine
https://www.readbyqxmd.com/read/27553073/rsv-n-nanorings-fused-to-palivizumab-targeted-neutralizing-epitope-as-a-nanoparticle-rsv-vaccine
#18
Pierre-Louis Hervé, Charlotte Deloizy, Delphyne Descamps, Marie-Anne Rameix-Welti, Jenna Fix, Jason S McLellan, Jean-François Eléouët, Sabine Riffault
Respiratory syncytial virus (RSV) is the leading cause of acute respiratory infections in children, yet no vaccine is available. The sole licensed preventive treatment against RSV is composed of a monoclonal neutralizing antibody (palivizumab), which targets a conformational epitope located on the fusion protein (F). Palivizumab reduces the burden of bronchiolitis but does not prevent infection. Thus, the development of RSV vaccines remains a priority. We previously evaluated nanorings formed by RSV nucleoprotein (N) as an RSV vaccine, as well as an immunostimulatory carrier for heterologous antigens...
August 20, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27552683/diagnosing-and-treating-respiratory-syncytial-virus-bronchiolitis
#19
Daria B Napierkowski
Respiratory syncytial virus (RSV) is one of the major causes of respiratory tract illness in children and can lead to significant infection and death. This article discusses the incidence, clinical presentation, diagnosis, current treatment, and prevention options to successfully diagnose and treat infections caused by RSV.
September 22, 2016: Nurse Practitioner
https://www.readbyqxmd.com/read/27549246/urine-metabolomic-profiling-of-children-with-respiratory-tract-infections-in-the-emergency-department-a-pilot-study
#20
Darryl J Adamko, Erik Saude, Matthew Bear, Shana Regush, Joan L Robinson
BACKGROUND: Clinicians lack objective tests to help determine the severity of bronchiolitis or to distinguish a viral from bacterial causes of respiratory distress. We hypothesized that children with respiratory syncytial virus (RSV) infection would have a different metabolomic profile compared to those with bacterial infection or healthy controls, and this might also vary with bronchiolitis severity. METHODS: Clinical information and urine-based metabolomic data were collected from healthy age-matched children (n = 37) and those admitted to hospital with a proven infection (RSV n = 55; Non-RSV viral n = 16; bacterial n = 24)...
August 22, 2016: BMC Infectious Diseases
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