scholarly journals Evaluation of Human Respiratory Syncytial Virus and Human Parainfluenza Virus Type 3 among Hospitalized Children in Northwest of Iran

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Zahra Ramezannia ◽  
Javid Sadeghi ◽  
Shahram Abdoli Oskouie ◽  
Mohammad Ahangarzadeh Rezaee ◽  
Hossein Bannazadeh Baghi ◽  
...  
Keyword(s):  
Respiratory Syncytial Virus ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Respiratory Infections ◽  
Winter Season ◽  
Human Respiratory Syncytial Virus ◽  
Respiratory Pathogens ◽  
Limited Information ◽  
Syncytial Virus ◽  
Tract Infections

Background. Acute respiratory tract infections (ARTIs) are the leading cause of illnesses in children. Human respiratory syncytial virus (HRSV) and human parainfluenza viruses (HPIVs) are among the most common etiologic agents associated with viral respiratory tract infections in children worldwide. Nevertheless, limited information is available on the spread of infections of these two viruses in northwest Iran. Objective. The purpose of the current study is to evaluate the frequency of RSV and HPIV-3 and clinical features among Iranian children with confirmed respiratory infections between April 2019 and March 2020. Methods. 100 nasopharyngeal swabs were collected from hospitalized patients (under 5 years old) with ARTI from Tabriz Children’s Hospital. Detection of respiratory viruses was performed using the nested RT-PCR method. Results. Respiratory syncytial virus and HPIV-3 were recognized in 18% (18/100) and 2% (2/100) of children, respectively. Ten (55.6%) of the RSV-positive samples were male, while 8 (44.4%) were female. HPIV‐3 was found only among 2 male patients (100%). Most patients (61.1%) with RSV infection were less than 12 months old. Additionally, samples that were positive for HPIV-3 were less than 12 months old. RSV infections had occurred mainly during the winter season. Conclusions. This study confirms that RSV can be one of the important respiratory pathogens in children in northwestern Iran. However, according to this study, HPIV-3 has a lower prevalence among children in this area than RSV. Therefore, implementing a routine diagnosis for respiratory pathogens can improve the management of respiratory infections in children.

Respiratory syncytial virus infection in adults

BMJ ◽  
2019 ◽  
pp. l5021 ◽  
Author(s):  
Hannah H Nam ◽  
Michael G Ison
Keyword(s):  
Respiratory Syncytial Virus ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Rna Virus ◽  
Upper Respiratory Tract ◽  
Wide Range ◽  
Syncytial Virus ◽  
Tract Infections

ABSTRACT Human respiratory syncytial virus (RSV) belongs to the recently defined Pneumoviridae family, Orthopneumovirus genus. It is a negative sense, single stranded RNA virus that results in epidemics of respiratory infections that typically peak in the winter in temperate climates and during the rainy season in tropical climates. Generally, one of the two genotypes (A and B) predominates in a single season, alternating annually, although regional variation occurs. RSV is a cause of disease and death in children, older people, and immunocompromised patients, and its clinical effect on adults admitted to hospital is clarified with expanded use of multiplex molecular assays. Among adults, RSV produces a wide range of clinical symptoms including upper respiratory tract infections, severe lower respiratory tract infections, and exacerbations of underlying disease. Here we discuss the latest evidence on the burden of RSV related disease in adults, especially in those with immunocompromise or other comorbidities. We review current therapeutic and prevention options, as well as those in development.

Respiratory Syncytial Virus

2021 ◽  
Vol 42 (06) ◽  
pp. 788-799
Author(s):  
Hannah H. Nam ◽  
Michael G. Ison
Keyword(s):  
Respiratory Syncytial Virus ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Clinical Symptoms ◽  
Respiratory Infections ◽  
Rna Virus ◽  
Upper Respiratory Tract ◽  
Wide Range ◽  
Syncytial Virus ◽  
Tract Infections

AbstractHuman respiratory syncytial virus (RSV) is a negative sense single-stranded RNA virus that can result in epidemics of seasonal respiratory infections. Generally, one of the two genotypes (A and B) predominates in a single season and alternate annually with regional variation. RSV is a known cause of disease and death at both extremes of ages in the pediatric and elderly, as well as immunocompromised populations. The clinical impact of RSV on the hospitalized adults has been recently clarified with the expanded use of multiplex molecular assays. Among adults, RSV can produce a wide range of clinical symptoms due to upper respiratory tract infections potentially leading to severe lower respiratory tract infections, as well as exacerbations of underlying cardiac and lung diseases. While supportive care is the mainstay of therapy, there are currently multiple therapeutic and preventative options under development.

scholarly journals Extracellular amoebal-vesicles: potential transmission vehicles for respiratory viruses

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Rafik Dey ◽  
Melanie A. Folkins ◽  
Nicholas J. Ashbolt
Keyword(s):  
Respiratory Syncytial Virus ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Respiratory Viruses ◽  
Environmental Persistence ◽  
Viral Dissemination ◽  
Acute Respiratory Tract Infections ◽  
High Concentrations ◽  
Syncytial Virus ◽  
Tract Infections

AbstractHuman respiratory syncytial virus (RSV) is a major cause of acute respiratory tract infections in children and immunocompromised adults worldwide. Here we report that amoebae-release respirable-sized vesicles containing high concentrations of infectious RSV that persisted for the duration of the experiment. Given the ubiquity of amoebae in moist environments, our results suggest that extracellular amoebal-vesicles could contribute to the environmental persistence of respiratory viruses, including potential resistance to disinfection processes and thereby offering novel pathways for viral dissemination and transmission.

scholarly journals Bacterial and Viral Coinfections with the Human Respiratory Syncytial Virus

2021 ◽  
Vol 9 (6) ◽  
pp. 1293
Author(s):  
Gaspar A. Pacheco ◽  
Nicolás M. S. Gálvez ◽  
Jorge A. Soto ◽  
Catalina A. Andrade ◽  
Alexis M. Kalergis
Keyword(s):  
Respiratory Syncytial Virus ◽  
Influenza A ◽  
Human Respiratory Syncytial Virus ◽  
Respiratory Pathogens ◽  
Parainfluenza Viruses ◽  
Starting Point ◽  
The Social ◽  
Syncytial Virus ◽  
Tract Infections ◽  
Polymicrobial Infections

The human respiratory syncytial virus (hRSV) is one of the leading causes of acute lower respiratory tract infections in children under five years old. Notably, hRSV infections can give way to pneumonia and predispose to other respiratory complications later in life, such as asthma. Even though the social and economic burden associated with hRSV infections is tremendous, there are no approved vaccines to date to prevent the disease caused by this pathogen. Recently, coinfections and superinfections have turned into an active field of study, and interactions between many viral and bacterial pathogens have been studied. hRSV is not an exception since polymicrobial infections involving this virus are common, especially when illness has evolved into pneumonia. Here, we review the epidemiology and recent findings regarding the main polymicrobial infections involving hRSV and several prevalent bacterial and viral respiratory pathogens, such as Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Klebsiella pneumoniae, human rhinoviruses, influenza A virus, human metapneumovirus, and human parainfluenza viruses. As reports of most polymicrobial infections involving hRSV lack a molecular basis explaining the interaction between hRSV and these pathogens, we believe this review article can serve as a starting point to interesting and very much needed research in this area.

scholarly journals Viral etiology and epidemiology of pediatric patients hospitalized for acute respiratory tract infections in Macao: a retrospective study from 2014 to 2017

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Cheng Lei ◽  
Lisong Yang ◽  
Cheong Tat Lou ◽  
Fan Yang ◽  
Kin Ian SiTou ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Pediatric Patients ◽  
Respiratory Infections ◽  
Upper Respiratory Tract ◽  
Viral Etiology ◽  
Upper Respiratory ◽  
Syncytial Virus ◽  
Tract Infections

Abstract Background Acute respiratory infections (ARIs) are among the leading causes of hospitalization in children. Understanding the local dominant viral etiologies is important to inform infection control practices and clinical management. This study aimed to investigate the viral etiology and epidemiology of respiratory infections among pediatric inpatients in Macao. Methods A retrospective study using electronic health records between 2014 and 2017 at Kiang Wu Hospital was performed. Nasopharyngeal swab specimens were obtained from hospitalized children aged 13 years or younger with respiratory tract diseases. xMAP multiplex assays were employed to detect respiratory agents including 10 respiratory viruses. Data were analyzed to describe the frequency and seasonality. Results Of the 4880 children enrolled in the study, 3767 (77.1%) were positive for at least one of the 13 viral pathogens tested, of which 2707 (55.5%) being male and 2635 (70.0%) under 2 years old. Among the positive results, there were 3091 (82.0%) single infections and 676 (18.0%) multiple infections. The predominant viruses included human rhinovirus/enterovirus (HRV/EV 27.4%), adenovirus (ADV, 15.8%), respiratory syncytial virus B (RSVB, 7.8%) and respiratory syncytial virus A (RSVA, 7.8%). The detection of viral infection was the most prevalent in autumn (960/1176, 81.6%), followed by spring (1095/1406, 77.9%), winter (768/992, 77.4%), and summer (944/1306, 72.3%), with HRV/EV and ADV being most commonly detected throughout the 4 years of study period. The detection rate of viral infection was highest among ARI patients presented with croup (123/141, 87.2%), followed by lower respiratory tract infection (1924/2356, 81.7%) and upper respiratory tract infection (1720/2383, 72.2%). FluA, FluB and ADV were positive factors for upper respiratory tract infections. On the other hand, infection with RSVA, RSVB, PIV3, PIV4, HMPV, and EV/RHV were positively associated with lower respiratory tract infections; and PIV1, PIV2, and PIV3 were positively associated with croup. Conclusions This is the first study in Macao to determine the viral etiology and epidemiology of pediatric patients hospitalized for ARIs. The study findings can contribute to the awareness of pathogen, appropriate preventative measure, accurate diagnosis, and proper clinical management of respiratory viral infections among children in Macao.

Sign in / Sign up

Export Citation Format

Share Document