Etiology of severe acute respiratory infections in Ekaterinburg in different epidemic seasons

2021 ◽  
Vol 21 (3) ◽  
pp. 123-126
Author(s):  
Evgeniya Viktorovna Lelenkova ◽  
Alexandr Yurievich Markaryan
Keyword(s):  
Influenza A ◽  
Viral Infections ◽  
Respiratory Infections ◽  
Respiratory Viruses ◽  
Influenza Viruses ◽  
Hospital Treatment ◽  
Acute Respiratory Infections ◽  
Severe Acute Respiratory Infection ◽  
Hospital Patients ◽  
Severe Acute Respiratory Infections

BACKGROUND: Acute respiratory viral infections are ubiquitous. Part of the cases are severe and require hospital treatment. AIM: Studying the etiology of severe acute respiratory infections in patients of Ekaterinburg hospitals in different epidemic seasons (from 2017 to 2020). MATERIALS AND METHODS: 1,132 cases of severe acute respiratory infection were assessed. The structure of laboratory-confirmed cases was determined. RESULTS: In the assessed seasons, the proportion of respiratory viruses in the etiological structure of severe acute respiratory infections was 56.0% on average. B/Yamagata lineage of influenza viruses was predominant in the season of 2017/2018 (23.9% from the total number of respiratory viruses), influenza А (H1N1)pdm09 viruses were predominant in the season of 2018/2019 (27.7%), and influenza A and B viruses were identified in 2019/2020 (39.4% and 31.7%, respectively). СONCLUSIONS: The obtained results confirm a key role of influenza viruses in the etiology of severe acute respiratory infections among the hospital patients in different epidemic seasons.

scholarly journals Epidemiology of Respiratory Pathogens among Elderly Nursing Home Residents with Acute Respiratory Infections in Corsica, France, 2013–2017

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Shirley Masse ◽  
Lisandru Capai ◽  
Alessandra Falchi
Keyword(s):  
Nursing Home ◽  
Influenza A ◽  
Respiratory Infections ◽  
Nursing Home Residents ◽  
Respiratory Viruses ◽  
Sudden Onset ◽  
Influenza Viruses ◽  
Influenza B ◽  
Acute Respiratory Infections ◽  
Respiratory Pathogens

Background. The current study aims to describe the demographical and clinical characteristics of elderly nursing home (NH) residents with acute respiratory infections (ARIs) during four winter seasons (2013/2014–2016/2017), as well as the microbiological etiology of these infections. Methods. Seventeen NHs with at least one ARI resident in Corsica, France, were included. An ARI resident was defined as a resident developing a sudden onset of any constitutional symptoms in addition to any respiratory signs. Nasopharyngeal swabs from ARI residents were screened for the presence of 21 respiratory agents, including seasonal influenza viruses. Results. Of the 107 ARI residents enrolled from NHs, 61 (57%) were positive for at least one of the 21 respiratory pathogens. Forty-one (38.3%) of the 107 ARI residents had influenza: 38 (92%) were positive for influenza A (100% A(H3N2)) and three (8%) for influenza B/Victoria. Axillary fever (≥38°C) was significantly more common among patients infected with influenza A(H3N2). Conclusion. The circulation of seasonal respiratory viruses other than influenza A(H3N2) seems to be sporadic among elderly NH residents. Investigating the circulation of respiratory viruses in nonwinter seasons seems to be important in order to understand better the dynamic of their year-round circulation in NHs.

scholarly journals Age-Specific Etiology of Severe Acute Respiratory Infections and Influenza Vaccine Effectivity in Prevention of Hospitalization in Russia, 2018–2019 Season

2021 ◽  
Vol 11 (4) ◽  
pp. 413-425
Author(s):  
Anna Sominina ◽  
Daria Danilenko ◽  
Andrey Komissarov ◽  
Maria Pisareva ◽  
Tamila Musaeva ◽  
...  
Keyword(s):  
Influenza Vaccine ◽  
Influenza A ◽  
Respiratory Infections ◽  
Respiratory Viruses ◽  
H3n2 Virus ◽  
Acute Respiratory Infections ◽  
Pdm09 Virus ◽  
Negative Case ◽  
Influenza A H1n1 ◽  
Severe Acute Respiratory Infections

AbstractThe expansion and standardization of clinical trials, as well as the use of sensitive and specific molecular diagnostics methods, provide new information on the age-specific roles of influenza and other respiratory viruses in development of severe acute respiratory infections (SARI). Here, we present the results of the multicenter hospital-based study aimed to detect age-specific impact of influenza and other respiratory viruses (ORV). The 2018–2019 influenza season in Russia was characterized by co-circulation of influenza A(H1N1)pdm09 and A(H3N2) virus subtypes which were detected among hospitalized patients with SARI in 19.3% and 16.4%, respectively. RSV dominated among ORV (15.1% of total cases and 26.8% in infants aged ≤ 2 years). The most significant SARI agents in intensive care units were RSV and influenza A(H1N1)pdm09 virus, (37.3% and 25.4%, respectively, of PCR-positive cases). Hyperthermia was the most frequently registered symptom for influenza cases. In contrast, hypoxia, decreased blood O2 concentration, and dyspnea were registered more often in RSV, rhinovirus, and metapneumovirus infection in young children. Influenza vaccine effectiveness (IVE) against hospitalization of patients with PCR-confirmed influenza was evaluated using test-negative case–control design. IVE for children and adults was estimated to be 57.0% and 62.0%, respectively. Subtype specific IVE was higher against influenza A(H1N1)pdm09, compared to influenza A(H3N2) (60.3% and 45.8%, respectively). This correlates with delayed antigenic drift of the influenza A(H1N1)pdm09 virus and genetic heterogeneity of the influenza A(H3N2) population. These studies demonstrate the need to improve seasonal influenza prevention and control in all countries as states by the WHO Global Influenza Strategy for 2019–2030 initiative.

Influenza Viral Infections Surveillance and Clinical Presentations in Hospitalized Children: A Cross-Sectional Study

2021 ◽  
Vol 17 ◽  
Author(s):  
Montaha Al-Iede ◽  
Lena Sarhan ◽  
Leen Abushanab ◽  
Tamara Ayasrah ◽  
Rafaa Al Maani ◽  
...  
Keyword(s):  
Respiratory Infections ◽  
Respiratory Viruses ◽  
Influenza Viruses ◽  
University Hospital ◽  
Severe Illness ◽  
Influenza B Virus ◽  
Influenza B ◽  
Hospitalized Children ◽  
Acute Respiratory Infections ◽  
Clinical Presentations

Background: Influenza virus and other respiratory viruses have been identified as an essential cause of acute respiratory infections (ARIs) in children worldwide. However, there are few data on its frequency and clinical presentation in Jordan. Objectives: We aimed to identify the viral etiology of acute respiratory infections and the various clinical presentations in hospitalized children, especially those with influenza viruses compared to other respiratory viruses. Methods: A retrospective study that was conducted at the Jordan university hospital. All the positive nasopharyngeal aspirates that were collected from hospitalized children aged 0-19 years from January 2017 to January 2019 were reviewed. Results: A total of 338 nasopharyngeal aspirates (NPAs) with positive viral serology results were reviewed. Among the patients younger than four years, the RSV virus was the most frequently detected. However, the Influenza B virus was the most commonly seen in patients older than 5 years, H1N1 was more frequent in autumn (29.5%), and RSV was the most frequent virus in winter. Bronchopneumonia was the most frequent diagnosis among all hospitalized patients, followed by bronchiolitis. Out of 338 patients, 50.3 % had tachypnea, 70.7% of patients were admitted to the pediatric floor, while 18.6% presented with a severe illness and required admission to the pediatric intensive care unit (PICU). Infants under the age of one were more likely to have higher co-infection rates with other viruses compared to children over five years that had influenza. Conclusion: Presentations of influenza and other respiratory viruses vary between different age groups, such as sepsis in children younger than one year.

scholarly journals Clinical-epidemiological peculiarities of acute respiratory infections in children from 3 to 12 years and evaluation of effectiveness of antivirus therapy

2019 ◽  
Vol 11 (3) ◽  
pp. 38-45
Author(s):  
S. A. Khmilevskaya ◽  
N. I. Zryachkin ◽  
V. E. Mikhailova
Keyword(s):  
Viral Infections ◽  
Respiratory Infections ◽  
Molecular Genetic ◽  
Respiratory Viruses ◽  
Acute Respiratory Infections ◽  
Age Group ◽  
Leading Role ◽  
Respiratory Viral Infections ◽  
Acute Respiratory Viral Infection ◽  
Tract Infections

The aim: to study the etiological structure of acute respiratory infections in children aged 3 to 12 hospitalized in the early stages of the disease in the department of respiratory infections of the children’s hospital, and to reveal the features of their clinical course and the timing of DNA / RNA elimination of respiratory viruses from nasal secretions, depending on the method of therapy. Materials and methods: 100 children with acute respiratory infections aged 3 to 12 years were monitored. The nasal secrets on the DNA / RNA of respiratory viruses were studied by PCR. Depending on the method of therapy, patients were divided into 2 groups: patients of group 1 (comparison) received basic treatment (without the use of antiviral drugs), in patients of the 2nd group (main), along with basal therapy, the drug was used umifenovir in a 5-day course at the ageappropriate dosage. Results: In the etiologic structure of ARVI in children from 3 to 12 years, the leading place was taken by rhinovirus, influenza and metapneumovirus infections (isolated – 18%, 19% and 20% respectively, in the form of a mixed infection – 11%). The main syndromic diagnosis at the height of the disease was rhinopharyngitis. Complications were observed in 42% of cases, as often as possible with flu – 53% of cases. Features of metapneumovirus infection in children of this age group were: predominance of non-severe forms of the disease in the form of acute fever with symptoms of rhinopharyngitis, as well as a small incidence of lower respiratory tract infections. The use of the drug umiphenovir in children with acute respiratory viral infections of various etiologies contributed to significantly faster elimination of viral DNA / RNA from the nasal secretion, which was accompanied by a ecrease in the duration of the main clinical and hematological symptoms of the disease, a decrease in the incidence of complications, and reduced the duration of stay in hospital. Conclusion: application of modern molecular genetic methods of diagnostics made it possible to identify the leading role of influenza, metapneumovirus and rhinovirus infections in the etiology of acute respiratory viral infection in patients aged 3 to 12 years, and to determine a number of clinical features characteristic of this age group. The results of the study testify to the effectiveness of umiphenovir in the treatment of children with acute respiratory viral infections of various etiologies and allow us to recommend this drug as an effective and safe etiotropic agent.

scholarly journals Respiratory viral infections in children: modalities for pathogenic treatment

2021 ◽  
Vol 5 (11) ◽  
pp. 762-767
Author(s):  
S.V. Nikolaeva ◽  
◽  
Yu.N. Khlypovka ◽  
V.A. Zavolozhin ◽  
E.K. Shushakova ◽  
...  
Keyword(s):  
Viral Infections ◽  
Respiratory Infections ◽  
Rapid Identification ◽  
Influenza Viruses ◽  
Epidemiological Surveillance ◽  
Acute Respiratory Infections ◽  
Emerging Viruses ◽  
Therapeutic Measures ◽  
Respiratory Viral Infections ◽  
Rhinovirus C

Respiratory viruses are the leading cause of pediatric morbidity and mortality worldwide. Rapid identification of a pathogen, epidemiological surveillance, description of symptoms, and the development of preventive and therapeutic measures are keystones to limit the spread of respiratory infections. Novel viruses with specific properties are regularly discovered. This paper addresses essential data on the most common viruses provoking acute respiratory infections, including whose in children and the pattern of their course. Conventionally, the most vital concern is flu. Influenza viruses provoke seasonal outbreaks, epidemics, and pandemics. Many studies demonstrate the role of rhinovirus C in the development of bronchiolitis and, subsequently, asthma. Severe acute respiratory syndrome-related coronavirus (SARS-CoV), Middle East respiratory syndrome-related coronavirus (MERS-CoV), and SARS-CoV-2 provoking COVID-19 were recently described. Knowledge of known and newly emerging viruses is crucial for timely adequate medical care. The authors discuss major therapeutic strategies for acute respiratory infections that provide a more favorable course of infectious inflammation irrespective of viral etiology. KEYWORDS: acute respiratory infections, influenza virus, rhinovirus, coronavirus, pneumonia, interferon. FOR CITATION: Nikolaeva S.V., Khlypovka Yu.N., Zavolozhin V.A. et al. Respiratory viral infections in children: modalities for pathogenic treatment. Russian Medical Inquiry. 2021;5(11):762–767 (in Russ.). DOI: 10.32364/2587-6821-2021-5-11-762-767.

scholarly journals Acute respiratory infections in outpatient care in the era of the COVID-19 pandemic: the role and position of antibacterial therapy

2020 ◽  
Vol 4 (4) ◽  
pp. 214-218
Author(s):  
R.F. Khamitov ◽  
Keyword(s):  
Health Care ◽  
Outpatient Care ◽  
Viral Infections ◽  
Respiratory Infections ◽  
Respiratory Viruses ◽  
Acute Respiratory Infections ◽  
The Novel ◽  
Coronavirus Infection ◽  
Novel Coronavirus ◽  
Care Costs

Acute respiratory infections of the upper and lower respiratory tract are currently the leading cause of human morbidity, mainly due to the seasonal rise of the incidence rates of viral infections. This results in the heavy burden of annual health care costs. The COVID-19 pandemic exacerbated the problem. The associations between respiratory viruses and bacteria are not always clear thus accounting for the diversity of the risks of the complicated course and fatal outcomes of various bacterial viral coinfections. Influenza virus is associated with the high rate of bacterial complications (in particular, during seasonal peaks). Meanwhile, this is less typical of the novel coronavirus infection. In addition, several studies demonstrate the competitive edge of SARS-CoV-2 when interacting with other respiratory viruses. The specificities of viral bacterial associations greatly affect the treatment whose inadequacy (in particular, the prescription of antibiotics) is the leading cause of the increasing antimicrobial resistance of contemporary germs. The novel coronavirus infection SARS-CoV-2 is no exception in terms of inappropriate antibiotic prescribing as occurred often in the seasonal rise of acute respiratory viral infections. The understanding of this issue, the optimization of treatment strategies, and a reduction in health care costs will allow for preserving antibiotics as a class of highly effective medications. KEYWORDS: acute respiratory infections, COVID-19, bacterial coinfection, outpatient care, lung damage, antimicrobial therapy. FOR CITATION: Khamitov R.F. Acute respiratory infections in outpatient care in the era of the COVID-19 pandemic: the role and position of antibacterial therapy. Russian Medical Inquiry. 2020;4(4):214–218. DOI: 10.32364/2587-6821-2020-4-4-214-218.

Identification of adenovirus species in Iranian pediatric population with severe acute respiratory infections

2019 ◽  
Vol 14 (9) ◽  
pp. 577-583
Author(s):  
Nazanin-Zahra Shafiei-Jandaghi ◽  
Jila Yavarian ◽  
Somayeh Shatizadeh Malekshahi ◽  
Maryam Naseri ◽  
Azadeh Shadab ◽  
...  
Keyword(s):  
Phylogenetic Tree ◽  
Molecular Epidemiology ◽  
Nested Pcr ◽  
Acute Respiratory Infection ◽  
Respiratory Infections ◽  
Pediatric Population ◽  
Human Adenovirus ◽  
Acute Respiratory Infections ◽  
Severe Acute Respiratory Infection ◽  
Severe Acute Respiratory Infections

Aim: In this study we aimed to find the rate of human adenovirus (HAdV) infections and identify HAdVs molecular epidemiology in children younger than 5 years old with clinical diagnosis of severe acute respiratory infections in Iran. Patients & methods: A semi-nested PCR with in-house designed primers for HAdV was performed on 200 oropharyngeal swabs collected within 5 days from the onset of symptoms. The positive samples were subjected to sequencing and a phylogenetic tree was drawn. Results: Out of 200 specimens, 71 (35.5%) cases were positive for HAdVs. Detected strains matched with HAdV species B (80.3%), C (15.5%), D (2.8%) and E (1.8%). HAdV- B14/55 and HAdV-B3 were the most prevalent types, respectively. Conclusion: This study showed that infections with HAdV species B, were common in children, who were clinically diagnosed as severe acute respiratory infection cases in Iran. The results could be useful for future epidemiological researches.

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