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https://www.readbyqxmd.com/read/28914750/live-attenuated-influenza-vaccination-prior-to-age-3-years-and-subsequent-development-of-asthma-a-14-year-follow-up-study
#1
Roger P Baxter, Ned Lewis, Bruce Fireman, John Hansen, Nicola P Klein, Justin R Ortiz
BACKGROUND: Live-attenuated influenza vaccines (LAIVs) are not licensed in children <2 years because of a wheezing safety signal that has not been fully elucidated. In 2000, the Kaiser Permanente Vaccine Study Center conducted a placebo controlled randomized clinical trial (RCT) of LAIV in children. As many of these children were still enrolled in Kaiser Permanente in 2014, we could assess the possible long-term association between LAIV and subsequent asthma diagnosis. METHODS: We identified all children who were originally enrolled into the LAIV RCT at < 3 years of age...
September 12, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28913991/seasonal-cycle-and-relationship-of-seasonal-rhino-and-influenza-virus-epidemics-with-episodes-of-asthma-exacerbation-in-different-age-groups
#2
Seung Won Lee, Shinhae Lee, Youn Ho Sheen, Eun Kyo Ha, Sun Hee Choi, Min Suk Yang, Sohyun Hwang, Sung Soon Kim, Jang Hoon Choi, Man Yong Han
PURPOSE: Seasonal variations in asthma exacerbation (AE) are associated with respiratory virus outbreaks and the return of children to school after vacation. This study aims to elucidate the period, phase, and amplitude of seasonal cycles of AE in 5 different age groups with regard to rhino- and influenza virus epidemics in Korea. METHODS: The number of daily emergency department (ED) visits for AE in all age groups of Korea and the nationwide weekly incidence of rhino- and influenza virus, were obtained for 2008-2012...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28913988/prevalence-of-respiratory-viral-infections-in-korean-adult-asthmatics-with-acute-exacerbations-comparison-with-those-with-stable-state
#3
Ki Hyun Seo, Da Jeong Bae, Ji Na Kim, Ho Sung Lee, Yong Hoon Kim, Jong Sook Park, Myung Shin Kim, Hun Soo Chang, Ji Hye Son, Dong Gyu Baek, Jun Suk Lee, Choon Sik Park
PURPOSE: Viral infections are involved in ~50% of exacerbations among Caucasian adult asthmatics. However, there have been few reports on the causative virus of exacerbations in Korean adult asthmatics. Thus, we compared frequencies and types of viruses between lower respiratory tract illnesses (LRTIs) with exacerbations (exacerbated LRTIs) and those without exacerbations (stable LRTIs) to evaluate contribution of respiratory viruses to exacerbations. METHODS: Viral RNA was extracted from sputum using the Viral Gene-spin™ Kit...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28889999/humoral-immune-responses-during-asthma-and-influenza-co-morbidity-in-mice
#4
Laura A Doorley, Kim S LeMessurier, Amy R Iverson, Maneesha Palipane, Amali E Samarasinghe
Humoral immunity serve dual functions of direct pathogen neutralization and enhancement of leukocyte function. Antibody classes are determined by antigen triggers, and the resulting antibodies can contribute to disease pathogenesis and host defense. Although asthma and influenza are immunologically distinct diseases, since we have found that allergic asthma exacerbation promotes antiviral host responses to influenza A virus, we hypothesized that humoral immunity may contribute to allergic host protection during influenza...
September 7, 2017: Immunobiology
https://www.readbyqxmd.com/read/28880061/clinical-course-of-asthma-patients-with-h1n1-influenza-infection-and-oseltamivir
#5
Min-Hye Kim, Woo-Jung Song, Min-Suk Yang, So-Hee Lee, Jae-Woo Kwon, Sae-Hoon Kim, Hye-Ryun Kang, Heung-Woo Park, Young-Joo Cho, Sang-Heon Cho, Kyung-Up Min, You-Young Kim, Yoon-Seok Chang
BACKGROUND: H1N1 influenza virus prevailed throughout the world in 2009. However, there are few reports on the clinical features of H1N1 influenza infection in adult asthma patients. We evaluated the clinical features in asthma patients with H1N1 influenza infection who took oseltamivir and compared them to those with other upper respiratory infections. METHODS: We reviewed asthma patients over 15 years of age who had visited Seoul National University Hospital and Seoul National University Bundang Hospital for suspected H1N1 influenza infection from August 2009 to March 2010...
September 5, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28870461/enhanced-plasmacytoid-dendritic-cell-antiviral-responses-after-omalizumab
#6
Michelle A Gill, Andrew H Liu, Agustin Calatroni, Rebecca Z Krouse, Baomei Shao, Allison Schiltz, James E Gern, Alkis Togias, William W Busse
BACKGROUND: Atopy and viral respiratory infections synergistically promote asthma exacerbations. IgE cross-linking inhibits critical viral-induced IFNα responses of plasmacytoid dendritic cells (pDCs), which can be deficient in allergic asthma. OBJECTIVE: To determine whether reducing IgE in vivo with omalizumab treatment increases pDC antiviral IFNα responses in inner city children with asthma. METHODS: PBMCs and pDCs isolated from children with exacerbation-prone asthma before and during omalizumab treatment were stimulated ex vivo with rhinovirus and influenza in the presence or absence of IgE cross-linking...
September 1, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28852915/evaluation-of-pharmacist-initiated-interventions-on-vaccination-rates-in-patients-with-asthma-or-copd
#7
Haley M Klassing, Janelle F Ruisinger, Emily S Prohaska, Brittany L Melton
To determine if pharmacy-initiated interventions improved the rate of influenza and pneumococcal vaccinations in adult patients with asthma and/or chronic obstructive pulmonary disease (COPD). Adult patients who filled prescriptions at one of three community pharmacies, who had a dispensing history indicative of an asthma and/or COPD diagnosis were randomized to receive a personal phone call or standardized mailed letter recommending influenza and pneumococcal vaccinations, or control with no vaccination information...
August 29, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/28844189/prevalence-of-comorbidities-in-periodontitis-patients-compared-to-the-general-austrian-population
#8
Martina Sperr, Michael Kundi, Vernes Tursic, Margit Bristela, Andreas Moritz, Oleh Andrukhov, Xiaohui Rausch-Fan, Wolfgang R Sperr
BACKGROUND: To analyze the prevalence and impact of comorbidities in patients with periodontitis in Austria. METHODS: The prevalence of comorbidities was evaluated in 1199 patients with periodontitis (median age: 49, range: 14-83 years). These data were compared to an age and sex matched randomly selected cohort of the Austrian population by an unconditional logistic regression model. RESULTS: Comorbidities were found in 821/1199=68.5% patients...
August 28, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28831046/pulmonary-inflammation-and-cytokine-dynamics-of-bronchoalveolar-lavage-fluid-from-a-mouse-model-of-bronchial-asthma-during-a-h1n1-pdm09-influenza-infection
#9
Yousuke Fujimoto, Shunji Hasegawa, Takeshi Matsushige, Hiroyuki Wakiguchi, Tamaki Nakamura, Hideki Hasegawa, Noriko Nakajima, Akira Ainai, Atsunori Oga, Hiroshi Itoh, Komei Shirabe, Shoichi Toda, Ryo Atsuta, Tsuneo Morishima, Shouichi Ohga
Asthmatic patients present more rapid progression of respiratory distress after A(H1N1)pdm09 influenza infection than after seasonal infection. Here, we sought to clarify the pathophysiology of early deterioration in asthmatic patients after A(H1N1)pdm09 infection. Cytokine levels and virus titres in bronchoalveolar lavage fluid from mice with and without asthma after A(H1N1)pdm09 or seasonal H1N1 infection were examined. In asthma/A(H1N1)pdm09 mice, IL-6 and TNF-α levels peaked at 3 days post-infection and were higher than those in all other groups...
August 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813449/influenza-virus-infections-among-patients-attending-emergency-department-according-to-main-reason-to-presenting-to-ed-a-3-year-prospective-observational-study-during-seasonal-epidemic-periods
#10
Enrique Casalino, Stephanie Antoniol, Nadhira Fidouh, Christophe Choquet, Jean-Christophe Lucet, Xavier Duval, Benoit Visseaux, Laurent Pereira
OBJECTIVE: The role of influenza virus in patients presenting at ED during seasonal-epidemic periods has not previously been specified. Our objective was to determine its frequency according to clinical presentation. METHODS: This is a prospective observational study conducted during three-consecutive seasonal Influenza epidemics (2013-2015), including patients presenting i) community-acquired pneumonia (CAP); ii) severe acute symptoms (SAS): respiratory failure (RF), hemodynamic failure (HF), cardiac failure (CF), and miscellaneous symptoms (M); iii) symptoms suggesting influenza (PSSI)...
2017: PloS One
https://www.readbyqxmd.com/read/28771405/pediatric-readmissions-after-hospitalizations-for-lower-respiratory-infections
#11
Mari M Nakamura, Alan M Zaslavsky, Sara L Toomey, Carter R Petty, Maria C Bryant, Alexandra T Geanacopoulos, Ashish K Jha, Mark A Schuster
BACKGROUND AND OBJECTIVE: Lower respiratory infections (LRIs) are among the most common reasons for pediatric hospitalization and among the diagnoses with the highest number of readmissions. Characterizing LRI readmissions would help guide efforts to prevent them. We assessed variation in pediatric LRI readmission rates, risk factors for readmission, and readmission diagnoses. METHODS: We analyzed 2008-2009 Medicaid Analytic eXtract data for patients <18 years of age in 26 states...
August 2017: Pediatrics
https://www.readbyqxmd.com/read/28771101/natural-helper-cells-mediate-respiratory-syncytial-virus-induced-airway-inflammation-by-producing-type-2-cytokines-in-an-il-33-dependent-manner
#12
Xu Han, Ruonan Chai, Feifei Qi, Song Bai, Yulin Cui, Yuee Teng, Beixing Liu
AIM: Type 2 cytokine production during respiratory virus infection is considered to be linked with asthma exacerbation. As potent Th2 cytokine producers, natural helper (NH) cells play a key role in influenza virus-induced airway hyper-responsiveness. However, it is unclear whether NH cells contribute to respiratory syncytial virus (RSV)-induced airway inflammation, and how the cytokine profile in NH cells is changed during RSV infection. METHODS: BALB/c mice were infected intranasally with RSV...
August 3, 2017: Immunotherapy
https://www.readbyqxmd.com/read/28763071/prevalence-of-respiratory-viruses-in-wheezing-children-not-older-than-24-months-of-age
#13
Martín Bedolla-Barajas, Hilda Montero, Jaime Morales-Romero, Adriana Landa-Cardeña, Jahaziel Díaz, Netzahualpilli Delgado-Figueroa, Luis Gustavo Orozco-Alatorre
INTRODUCTION: Wheezing in children not older than 24 months of age is a frequent event, and viruses are usually the causative agents. The aim of the study was to estimate the prevalence of respiratory viruses in wheezing children who were not older than 24 months of age and who had no history of asthma. METHODS: Fifty-five Mexican children were included in an analytical cross-sectional study. Nasal secretions were obtained by using sterile rayon-tipped applicators to identify the virus by polymerase chain reaction or reverse transcription-polymerase chain reaction: adenovirus, bocavirus, human rhinovirus, influenza virus type A, human metapneumovirus, parainfluenza, rhinovirus, and respiratory syncytial virus...
May 2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/28738364/risk-factors-for-community-acquired-pneumonia-in-adults-a-systematic-review-of-observational-studies
#14
Jordi Almirall, Mateu Serra-Prat, Ignasi Bolíbar, Valentina Balasso
We performed a systematic review of the literature to establish conclusive evidence of risk factors for community-acquired pneumonia (CAP). Observational studies (cross-sectional, case-control, and cohort studies) the primary outcome of which was to assess risk factors for CAP in both hospitalized and ambulatory adult patients with radiologically confirmed pneumonia were selected. The Newcastle-Ottawa Scale specific for cohort and case-control designs was used for quality assessment. Twenty-nine studies (20 case-control, 8 cohort, and 1 cross-sectional) were selected, with 44...
July 25, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28668107/asthma-in-older-people-hospitalized-with-influenza-in-spain-a-case-control-study
#15
María Morales-Suárez-Varela, Agustín Llopis-González, Carlos Vergara-Hernández, Estrella Fernandez-Fabrellas, Francisco Sanz, María José Perez-Lozano, Vicente Martin, Jenaro Astray, Jesús Castilla, Mikel Egurrola, Luis Force, Diana Toledo, Àngela Domínguez
BACKGROUND: Influenza infection is an exacerbating factor for asthma, and its prevention is critical in older patients with asthma. OBJECTIVE: This study investigated the association between asthma and influenza-related hospitalization, in Spain, of patients ages ≥ 65 years and their clinical evolution. METHODS: A multicenter case-control study was carried out in 20 Spanish hospitals during the 2013-2014 and 2014-2015 influenza seasons. Patients ages ≥ 65 years hospitalized with laboratory-confirmed influenza with and without asthma were matched with controls according to the presence of asthma, sex, age, hospital, and date of hospitalization...
July 1, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28666479/desert-dust-outbreaks-and-respiratory-morbidity-in-athens-greece
#16
Stavroula-Myrto Trianti, Evangelia Samoli, Sophia Rodopoulou, Klea Katsouyanni, Spyros A Papiris, Anna Karakatsani
BACKGROUND: Ambient particulate matter (PM) has an adverse effect on respiratory morbidity. Desert dust outbreaks contribute to increased PM levels but the toxicity of desert dust mixed with anthropogenic pollutants needs clarification. METHODS: We identified 132 days with desert dust episodes and 177 matched days by day of the week, season, temperature and humidity between 2001 and 2006 in Athens, Greece. We collected data on regulated pollutants and daily emergency outpatient visits and admissions for respiratory causes...
July 1, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28636411/asthma-and-influenza-vaccination-in-elderly-hospitalized-patients-matched-case-control-study-in-spain
#17
María Morales Suárez-Varela, Agustin Llopis, Estrella Fernandez-Fabrellas, Francisco Sanz, M Jose Perez-Lozano, Vicente Martin, Jenaro Astray, Jesús Castilla, Mikel Egurrola, Luis Force, Diana Toledo, Àngela Domínguez
OBJECTIVES: Influenza infection is an exacerbating factor for asthma, and its prevention is critical in managing asthmatic patients. We investigated the effect of influenza vaccination on asthmatic and non-asthmatic patients hospitalized with laboratory-confirmed influenza in Spain. METHODS: We made a matched case-control study to assess the frequency of hospitalization for influenza in people aged ≥65 years. Hospitalized patients with unplanned hospital admissions were recruited from 20 hospitals representing seven Spanish regions...
June 21, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28634031/does-atopy-affect-the-course-of-viral-pneumonia
#18
S B Erdem, D Can, S Girit, F Çatal, V Şen, S Pekcan, H Yüksel, A Bingöl, I Bostancı, D Erge, R Ersu
BACKGROUND: The presence of atopy is considered as a risk factor for severe respiratory symptoms in children. The objective of this study was to examine the effect of atopy on the course of disease in children hospitalised with viral pneumonia. METHODS: Children between the ages of 1 and 6 years hospitalised due to viral pneumonia between the years of 2013 and 2016 were included to this multicentre study. Patients were classified into two groups as mild-moderate and severe according to the course of pneumonia...
June 17, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28633906/rsv-in-adult-ed-patients-do-emergency%C3%A2-providers-consider-rsv-as-an-admission-diagnosis
#19
William Binder, Jill Thorsen, Pierre Borczuk
BACKGROUND: Respiratory Syncytial Virus (RSV) has been recognized for over half a century as a cause of morbidity in infants and children. Over the past 20years, data has emerged linking RSV as a cause of illness in adults resulting in 177,000 annual hospitalizations and up to 14,000 deaths among older adults. OBJECTIVE: Characterize clinical variables in a cohort of adult RSV patients. We hypothesize that emergency physicians do not routinely consider RSV in the differential diagnosis (DDx) of influenza like illness...
August 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28591866/effectiveness-of-influenza-vaccines-in-asthma-a-systematic-review-and-meta-analysis
#20
Eleftheria Vasileiou, Aziz Sheikh, Chris Butler, Karim El Ferkh, Beatrix von Wissmann, Jim McMenamin, Lewis Ritchie, Jürgen Schwarze, Nikolaos G Papadopoulos, Sebastian L Johnston, Lilly Tian, Colin R Simpson
There is uncertainty about the effectiveness of influenza vaccination in people with asthma and its impact on asthma outcomes, which may contribute to the sub-optimal vaccination rates in people with asthma. This systematic review and meta-analysis involved searching 12 international databases for randomized controlled trials (RCTs) and high quality quasi-experimental and epidemiological studies (1970 to 2016). The risk of bias was low for three included RCTs. The quality of three included observational studies was moderate...
June 7, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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