Question: Human milk has stronger antiviral, antibacterial, and anti-inflammatory properties compared with formula milk. How dose breastfeeding affect respiratory syncytial virus infection in Korea? Finding: Breastfed infants required less oxygen therapy and possible intensive care unit admission than artificial formulafed infants during respiratory syncytial virus infection. Meaning: This protective role of breast milk on RSV severity can be a supporting evidence for promoting breastfeeding in Korea. |
Purpose: Respiratory syncytial virus (RSV) infection can cause various neurological complications. This study aimed to investigate the RSV-associated neurologic manifestations that present with seizures. Methods: We retrospectively reviewed the medical records of patients aged less than 15 years with laboratory-confirmed RSV infections and seizures between January 2011 and December 2016 in a regional hospital in South Korea. Results: During this period, 1,193... |
The aim of this study was to evaluate whether infants with rhinovirus (RV) infection-induced wheezing and those with respiratory syncytial virus (RSV) infection-induced wheezing have different cytokine profiles in the acute stage. Of the infants with lower respiratory tract infection (LRTI) between September 2011 and May 2012, 88 were confirmed using reverse transcription polymerase chain reaction and hospitalized. Systemic interferon-gamma (IFN-γ),... |
Human respiratory syncytial virus (HRSV) is a major cause of severe respiratory tract illnesses in infants and young children worldwide. Despite its importance as a respiratory pathogen, there is currently no licensed vaccine for HRSV. Following failure of the initial trial of formalin-inactivated virus particle vaccine, continuous efforts have been made for the development of safe and efficacious vaccines against... |
Synthesis of regulated on activation, normal T-cells expressed and secreted (RANTES) in the airway has previously been shown to be elevated after respiratory syncytial virus (RSV) infection. However, since few studies have examined whether RSV-infected asthma patients express a higher level of RANTES than do normal individuals, we used a murine model of asthma to address this question. We prepared |
Respiratory syncytial virus (RSV) is a major cause of respiratory infection in children. Most of the pediatric population have RSV infection before the age of 2, and recurrent infections are common even within one season. Chronic lung disease, prematurity, along with congenital heart disease (CHD) are major risk factors in severe lower respiratory infection. In hemo-dynamically significant CHD patients with... |
Respiratory syncytial virus (RSV) is a main cause of hospitalization for bronchiolitis and pneumonia in infants worldwide. Children with hemodynamically significant congenital heart disease (HS-CHD), as well as premature infants are at high risk for severe RSV diseases. Mortality rates for CHD patients hospitalized with RSV have been reported as about 24 times higher compared with those without RSV infection.... |
Purpose : Respiratory syncytial virus (RSV) is one of the main pathogens causing lower respiratory infections (LRI) in young children, usually of limited severity. However, in congenital heart disease (CHD) patients, one of the high-risk groups for RSV infection, RSV can cause serious illnesses and fatal results. To elucidate the effects of RSV infection in CHD patients, we observed RSV... |
Purpose : Respiratory syncytial virus (RSV) is the most frequent cause of lower respiratory infections in infants and young children. Early detection allows quarantining of infected inpatients to prevent nosocomial transmission and to choose a treatment. To achieve rapid reporting, to facilitate prompt antiviral therapy, and to avoid unnecessary use of antibiotics, an easy, rapid diagnostic method for RSV is... |
Purpose : To identify clinical characteristics of severe respiratory syncytial virus (RSV) in neonatal period and early infancy and provide information in clinical practice. Methods : Twelve neonates and young infants (<6 months) who were infected by respiratory syncytial virus and required mechanical ventilation between March 2005 and July 2007 were enrolled. Diagnosis of RSV infection was made based on the... |
Purpose : This study was design and performed for evaluations of resent clinical pattern of bronchiolitis caused by RSV infection with children under 2 year of age for 5 years, who were admitted to pediatric ward. Methods : The inclusion criteria of the patients were children under 24 month-of-age, clinical manifestations of lower respiratory tract infection, and RSV antigen that... |
Purpose : This study was performed to characterize the etiology and clinical features of acute viral lower-respiratory tract infections(LRI). Methods : Etiologic agents and clinical features of acute viral LRI were studied from October. 2003 through March. 2004 in hospitalized children with LRI(253 cases) at Samsung Cheil Hospital. The viruses were identified by indirect immunofluorescent method. Medical records of patients with... |
Purpose : Interleukin-4(IL-4) is a critical component of the Th2 cytokine pathway and contributes to severity of respiratory syncytial virus(RSV) bronchiolitis. Previous studies observed an association between severe RSV bronchiolitis in Korean children with a common haplotype of the IL4 promoter. This study was performed to investigate functional differences of the variant IL4 promoter haplotypes. Methods : Genomic DNA was obtained... |
Purpose : Acute respiratory tract infections are the most common illnesses in children. The great majority of these infections involving lower respiratory tracts infections(LRTIs) are caused by respiratory viruses such as respiratory syncytial virus(RSV), parainfluenza virus(PIV), influenza virus (Flu), and adenovirus(ADV), etc. Our purpose was to determine seasonal epidemiology and clinical characteristic features of each viral infection. Methods : Nasopharyngeal aspirate(NPA)s... |
Purpose : This study was performed to evaluate of clinical manifestations of neonatal respiratory syncytial virus(RSV) infection, and to evaluate of differences of clinical manifestations between the neonates and infants who were infected by RSV. Methods : We reviewed the medical record of 75 children who were younger than 12 months of age and infected by RSV. We classified then into... |
The generation of a draft sequence of the human genome has lead to an opportunity to characterize human diversity, including the differences in host response to numerous pathogens. Host responses upon exposure to a pathogen can determine the wide spectrum of illness from subclinical or mild to severe diseases. Host factors, particularly genetic backgrounds, influence the pathogenesis of infectious diseases.... |
Purpose : We performed this study to evaluate the risk of rehospitalization for respiratory syncytial virus(RSV) infection among premature infants discharged from a neonatal intensive care unit(NICU). Methods : We performed a retrospective study for rehospitalization for RSV infection and risk factors among premature infants who were admitted to NICU and discharged between May 2001 and April 2003 in Wonkwang... |
Purpose : Viral respiratory infection, especially respiratory syncytial(RS) virus, can predispose sufferers to the development of asthma by mechanisms that are presently undetermined. The role of inflammatory mediators in pathogenesis of asthma and RS virus disease is not well-understood. We investigated the performance of serum eosinophil cationic protein(ECP), regulated on activation normal T-cell expressed and secreted(RANTES) and eotaxin levels on... |
Purpose : The purpose of the study is to understand the etiology and clinical features of severe acute viral lower respiratory tract infection(LRI), especially in conjunction with the use of ventilator care and/or with bronchiolitis obliterans. Methods : Etiologic agents and clinical features of severe acute viral LRI were studied from July 1998 through June 1999 in children at Asan Medical... |
Purpose : Acute lower respiratory tract infections(LRIs) are an important cause of pediatric morbidity and mortality. Causes of acute LRI in infants and children include bacteria, mycoplasma and respiratory viruses. Understanding of the epidemiology, etiology and clinical features of acute viral LRI is essential to improve the methods of prevention, diagnosis and management of these infections. Methods : Viral etiologic agents and clinical features of... |
Purpose : Respiratory syncytial virus(RSV) in the most common cause of bronchiolitis and pneumonia in chileren less than 2 years old. Complications of RSV infections may be life-threatening in children who are immunosuppressed or who have congenital heart disease. Thus it is imperative that laboratory results be rapid and accurate. We therefore were interested in evaluating the role of RSV... |
Basic experimental approach for rapid and acurate detection of respiratory syncitial virus (RSV) infection at gene level has been performed using polymerase chain reaction (PCR). RSV RNA was extracted by RNAzolB methol from RSV which was cultured in Hep-2 cell line. Of RSV genome having about 8,000 base pairs, base pairs between 3237th and 3522nd were selected to make four... |
Although lower respiratory tract infection is a major cause of childhood morbidity in Korea and respiratory viruses are presumed to be important pathogens, there have been few studies available. We diagnosed RSV infection by virus isolation and immunofluorescence in children with lower respiratory tract infection, seen at Seoul National University Children's Hospital from Nov. 1990 to Jul. 1991. The results were... |