scholarly journals Respiratory viral infections in the lower respiratory tract failure (Literature review)

2021 ◽  
Vol 13 (4) ◽  
pp. 5-13
Author(s):  
I. V. Babachenko ◽  
E. A. Kozyrev ◽  
E. V. Sharipova ◽  
E. D. Orlova ◽  
N. S. Tian
Keyword(s):  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Viral Infections ◽  
Community Acquired Pneumonia ◽  
Laboratory Diagnostics ◽  
Bacterial Strains ◽  
Lower Respiratory Tract Disease ◽  
Coronavirus Infection ◽  
Tract Disease

The sharp increase in viral pneumonia against the background of the pandemic of the new coronavirus infection SARS-CoV-2 requires more attention to the study of the role of viruses in damage to the lower respiratory tract, including their etiological significance in the development of community-acquired pneumonia. Modern possibilities of laboratory diagnostics make it possible not only to identify and study respiratory viruses, but also to help differentiate active viral infections as a cause of lower respiratory tract disease from virus carriers. The review describes the epidemiological and clinical features of the most relevant or less studied pneumotropic viral infections in children (respiratory syncytial, adenovirus, bocavirus, metapneumovirus), including their role in the etiology of pneumonia in children. Understanding the viral etiology of pneumonia in children will reduce the antibacterial load, which will help to reduce the side effects of chemotherapy and slow the emergence of antimicrobialresistant bacterial strains.

scholarly journals Coronavirus Infection in Acute Lower Respiratory Tract Disease of Infants

2004 ◽  
Vol 190 (5) ◽  
pp. 1036-1041 ◽  
Author(s):  
K. McIntosh ◽  
R. K. Chao ◽  
H. E. Krause ◽  
R. Wasil ◽  
H. E. Mocega ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Respiratory Tract Disease ◽  
Lower Respiratory Tract Disease ◽  
Coronavirus Infection ◽  
Tract Disease

Viral infections in hospitalized children affected by acute lower respiratory tract disease

1999 ◽  
Vol 75 (5) ◽  
pp. 334-44 ◽  
Author(s):  
Cristina R. Miyao ◽  
Alfredo E. Gilio ◽  
Sandra Vieira ◽  
Noeli Hein ◽  
Márcia M.C. Pahl ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Viral Infections ◽  
Hospitalized Children ◽  
Respiratory Tract Disease ◽  
Lower Respiratory Tract Disease ◽  
Tract Disease

scholarly journals Coronavirus Infection in Acute Lower Respiratory Tract Disease of Infants

1974 ◽  
Vol 130 (5) ◽  
pp. 502-507 ◽  
Author(s):  
K. McIntosh ◽  
R. K. Chao ◽  
H. E. Krause ◽  
R. Wasil ◽  
H. E. Mocega ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Respiratory Tract Disease ◽  
Lower Respiratory Tract Disease ◽  
Coronavirus Infection ◽  
Tract Disease

scholarly journals Functional profiling of COVID-19 respiratory tract microbiomes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Niina Haiminen ◽  
Filippo Utro ◽  
Ed Seabolt ◽  
Laxmi Parida
Keyword(s):  
Respiratory Tract ◽  
Carbohydrate Metabolism ◽  
Lower Respiratory Tract ◽  
Viral Infections ◽  
Lavage Fluid ◽  
Degradation Pathway ◽  
Community Acquired Pneumonia ◽  
The Body ◽  
Sequencing Data ◽  
Functional Profiling

AbstractIn response to the ongoing global pandemic, characterizing the molecular-level host interactions of the new coronavirus SARS-CoV-2 responsible for COVID-19 has been at the center of unprecedented scientific focus. However, when the virus enters the body it also interacts with the micro-organisms already inhabiting the host. Understanding the virus-host-microbiome interactions can yield additional insights into the biological processes perturbed by viral invasion. Alterations in the gut microbiome species and metabolites have been noted during respiratory viral infections, possibly impacting the lungs via gut-lung microbiome crosstalk. To better characterize microbial functions in the lower respiratory tract during COVID-19 infection, we carry out a functional analysis of previously published metatranscriptome sequencing data of bronchoalveolar lavage fluid from eight COVID-19 cases, twenty-five community-acquired pneumonia patients, and twenty healthy controls. The functional profiles resulting from comparing the sequences against annotated microbial protein domains clearly separate the cohorts. By examining the associated metabolic pathways, distinguishing functional signatures in COVID-19 respiratory tract microbiomes are identified, including decreased potential for lipid metabolism and glycan biosynthesis and metabolism pathways, and increased potential for carbohydrate metabolism pathways. The results include overlap between previous studies on COVID-19 microbiomes, including decrease in the glycosaminoglycan degradation pathway and increase in carbohydrate metabolism. The results also suggest novel connections to consider, possibly specific to the lower respiratory tract microbiome, calling for further research on microbial functions and host-microbiome interactions during SARS-CoV-2 infection.

Clinical Characteristics of the Afebrile Pneumonia Associated With Chlamydia trachomatis Infection in Infants Less Than 6 Months of Age

PEDIATRICS ◽  
1979 ◽  
Vol 63 (2) ◽  
pp. 192-197
Author(s):  
Margaret A. Tipple ◽  
Marc O. Beem ◽  
Evelyn M. Saxon
Keyword(s):  
Chlamydia Trachomatis ◽  
Respiratory Tract ◽  
Lower Respiratory Tract ◽  
Clinical Characteristics ◽  
Respiratory Tract Disease ◽  
Chlamydia Trachomatis Infection ◽  
Lower Respiratory Tract Disease ◽  
Tract Disease ◽  
Blood Eosinophils ◽  
Respiratory Tract Colonization

Respiratory tract colonization with Chlamydia trachomatis commonly occurs in natally acquired chlamydial infection and is sometimes associated with a chronic, afebrile pneumonia that has relatively distinctive clinical characteristics. To further define the frequency and clinical characteristics of lower respiratory tract disease associated with C trachomatis, we grouped 56 infants aged less than 6 months with afebrile pneumonia according to nasopharyngeal shedding of Chlamydia and viruses and compared their illnesses. Forty-one (73%) were positive for C trachomatis (23 had C trachomatis only, while 18 had C trachomatis plus a virus [cytomegalovirus, respiratory synctial virus, adenovirus, rhinovirus, or enterovirus]), and 15 were C trachomatis negative (nine had a virus only, and six had neither C trachomatis nor virus). The 41 infants with C trachomatis alone or C trachomatis plus a virus were similar clinically and differed significantly from other infants in several ways: (1) onset of symptoms before 8 weeks of age; (2) gradually worsening symptoms; (3) presentation for care at 4 to 11 weeks of age; (4) presence of conjunctivitis and ear abnormalities; (5) chest roentgenograms showing bilateral, symmetrical, interstitial infiltrates and hyperexpansion; (6) peripheral blood eosinophils ≥300/cu mm; and (7) elevated values for serum immunoglobulins M, G, and A.

Weight Status and Risk of Inpatient Admission for Children With Lower Respiratory Tract Disease

2021 ◽  
Author(s):  
Elizabeth E. Halvorson ◽  
Amit Saha ◽  
Christopher B. Forrest ◽  
Hanieh Razzaghi ◽  
Suchitra Rao ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Hospital Admission ◽  
Lower Respiratory Tract ◽  
Normal Weight ◽  
Research Network ◽  
Respiratory Tract Disease ◽  
Weight Category ◽  
Lower Respiratory Tract Disease ◽  
Class 1 ◽  
Tract Disease

OBJECTIVES To identify associations between weight category and hospital admission for lower respiratory tract disease (LRTD), defined as asthma, community-acquired pneumonia, viral pneumonia, or bronchiolitis, among children evaluated in pediatric emergency departments (PEDs). METHODS We performed a retrospective cohort study of children 2 to <18 years of age evaluated in the PED at 6 children’s hospitals within the PEDSnet clinical research network from 2009 to 2019. BMI percentile of children was classified as underweight, healthy weight, overweight, and class 1, 2, or 3 obesity. Children with complex chronic conditions were excluded. Mixed-effects multivariable logistic regression was used to assess associations between BMI categories and hospitalization or 7- and 30-day PED revisits, adjusted for covariates (age, sex, race and ethnicity, and payer). RESULTS Among 107 446 children with 218 180 PED evaluations for LRTD, 4.5% had underweight, 56.4% had healthy normal weight, 16.1% had overweight, 14.6% had class 1 obesity, 5.5% had class 2 obesity, and 3.0% had class 3 obesity. Underweight was associated with increased risk of hospital admission compared with normal weight (odds ratio [OR] 1.76; 95% confidence interval [CI] 1.69–1.84). Overweight (OR 0.87; 95% CI 0.85–0.90), class 1 obesity (OR 0.88; 95% CI 0.85–0.91), and class 2 obesity (OR 0.91; 95% CI 0.87–0.96) had negative associations with hospital admission. Class 1 and class 2, but not class 3, obesity had small positive associations with 7- and 30-day PED revisits. CONCLUSIONS We found an inverse relationship between patient weight category and risk for hospital admission in children evaluated in the PED for LRTD.

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