Etiology Of Pneumonia In Children Research Articles

Comparison of Severe Viral Pneumonia Caused by SARS-CoV-2 and Other Respiratory Viruses Among Malaysian Children During the COVID-19 Pandemic.

ObjectivesWe described the etiology of severe pneumonia in children during the height of the COVID-19 pandemic in Malaysia and compared the clinical features of severe SARS-CoV-2 to other respiratory viruses.MethodsThis retrospective study included all children aged 12 years and below hospitalized with severe pneumonia in Negeri Sembilan, Malaysia, between 1 April 2021 and 31 October 2021. We extracted demographic and clinical data and used logistic regression to examine risk factors associated with severe SARS-CoV-2 or other viral pneumonia.ResultsA total of 111 children were included. The median age was 15 months. Human rhinovirus/enterovirus, SARS-CoV-2 and respiratory syncytial virus were the most common etiology of severe pneumonia. Codetection of >1 viral pathogen was present in 14 (12.6%) patients. Children with severe COVID-19 presented early in the course of illness and had lower rates of pediatric intensive care admission. The presence of sick contact with an adult was a predictor for SARS-CoV-2, whereas adventitious breath sounds were predictive of other respiratory viruses.ConclusionsThe etiology of severe pneumonia in children evolved with the epidemic curve of COVID-19 and school closures. Children with severe pneumonia due to SARS-CoV-2 experienced a milder clinical course when compared to other respiratory viruses.

Bacterial etiology of pneumonia in children up to 2 months of age: a systematic review

Background: Following the widespread introduction of childhood pneumococcal conjugate vaccines (PCVs), a significant impact on pneumonia mortality in children under five years of age has been reported. It is still unknown whether PCVs are expected to reduce pneumonia burden in younger children, particularly ≤2 months of age, as current evidence on the role of S. pneumoniae in pneumonia etiology in this age group is scarce. We aimed to summarize the evidence of bacterial etiology of pneumonia in children ≤2 months of age. Methods: We conducted a systematic review considering studies evaluating a variety of syndromes associated with pneumonia, and reporting on laboratory confirmed etiologies, considering any diagnostic method and a variety of clinical specimens. We searched Medline/PubMed, Embase, WoS, Central and Index Medicus Global published in any language till April 30th, 2021. We included studies addressing the outcomes of interest in children ≤2 months of age and reporting on clinical trials, observational studies, and case series with at least 10 events. Screening of citations and data extraction were conducted in duplicate by independent reviewers, according to the study protocol registered on PROSPERO. Descriptive analyses of the various etiologic agents by syndrome are reported. Results: We identified 3,744 citations, of which 22 publications reporting on 13 studies were included. Study methods varied significantly. Nonetheless, gram positive organisms, in particular S. pneumoniae, were identified as important etiologic agents of pneumonia in children ≤2 months of age. Viral etiologies, in particular Respiratory Syncytial Virus, Rhinovirus, and Influenza were also identified. Conclusions: This review provides the most comprehensive analysis to date of the etiologies of pneumonia in children ≤2 months of age, suggesting that PCV impact is expected to occur in this age group. These results also have major implications for diagnosis and treatment of pneumonia in this age group.

Diagnostic significance of the determination of streptococcus pneumoniae antigen in the urine of children with community acquired pneumonia

Community-acquired pneumonia remains an urgent problem in modern pediatrics. Taking into account the variety of pathogens of community-acquired pneumonia, an important task is to identify the etiology of this disease rapidly. Early diagnostics is able to increase the effectiveness of treatment and exclude the irrational prescription of antibacterial drugs or the formation of resistable microflora. Traditional methods of etiotropic diagnostics do not always meet such criteria as timeliness, minimal invasiveness, and simplicity of reproduction. Meeting these requirements is especially important in pediatric practice due to the difficulty of venous access, collection of spontaneous or induced sputum and negative childhood denial reaction to invasive manipulation. Recently, active efforts have been made to identify the early markers con-firming the etiology of pulmonary inflammation, while the criteria for timeliness and non-invasiveness are met by methods for determining pathogen antigens in accessible media such as saliva and urine.Considering the fact that Streptococcus pneumoniae remains one of the main causative agents of pneumonia, its testing is of great practical importance. This article presents an overview of modern methods of etiotropic diagnosis of community-acquired pneumonia and the results of our own study of the effectiveness of detecting pneumococcal antigens in urine using express tests. Attention is focused on the use of minimally invasive methods for identifying the pathogen in practical pulmonology. Evaluation of the effectiveness of rapid testing was carried out in comparison with the results of bacterial sputum culture for pneumococcus. The analysis of the obtained results showed the high sensitivity and specificity of the Alere Binax Now test when checking the etiology of community-acquired pneumonia in children.

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

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.

Резистентна до макролідів мікоплазмова інфекція у дітей: концепція формування, сучасні принципи діагностики та лікування

Mycoplasma pneumoniae посідає провідне місце в етіології пневмонії у дітей. У статті наведено особливості перебігу резистентної до макролідів мікоплазмової пневмонії і сучасної тактики лікування на прикладі клінічного спостереження дитини шкільного віку. Авторами описані особливості епідеміології захворювання, акцентовано увагу на механізмах резистентності до макролідів Mycoplasma pneumoniae. У роботі детально описані механізми надмірної імунної відповіді, а також сучасні світові стандарти діагностики і тактики лікування пневмонії.

Viral Etiology of Pneumonia in Children with Congenital Heart Disease

Viral Etiology of Pneumonia in Children with Congenital Heart Disease

Implementing Innovative Approaches to Healthcare in a Lower-Middle Income Country: Perspectives from Malawi.

IntroductionSafe, reliable, and effective healthcare systems are essential for all nations to ensure the health and wellbeing of their citizens. However, this is not always achievable with clinical therapies constantly evolving, resulting in a domino effect of structural, policy and training changes. For low- and middle-income countries (LMICs), implementing change is restricted. It is essential that innovative and realistic solutions are developed, so that effective change can be realised in LMICs.Materials and MethodsIn this report of a global health conference held in July 2019, six perspectives are presented which aim to generate long-term positive change in Malaŵi. Perspective 1: Pneumonia – the BIOTOPE study (BIOmarkers TO diagnose PnEumonia) sought to determine the aetiology of pneumonia in children presenting in primary care. It assessed blood-based markers of bacterial infection as part of a rapid diagnostic approach to better utilise existing resources in Malaŵi. Perspective 2: Cardiovascular – the CARDIA project (CARdiac Dysfunction in Africa) was established to assess clinical and biochemical phenotypes of diabetic patients in Malaŵi. Perspective 3: Asthma – an observational study was conducted to implement a health system strengthening initiative for asthma. The use of locally adapted formularies and protocols with ongoing online mentoring through expert partnerships provided an opportunity to sustainably build capacity. Perspective 4: Sustainable Partnerships – establishing the Malaŵi electronic Health (eHealth) Research Centre, an international hub to develop education, research and innovation for long-term collaboration. Perspective 5: Part-Time PhD Studies – undertaking a part-time PhD within a LMIC provides logistic challenges, but also a number of opportunities for observational research. Perspective 6: Medical electives – an undergraduate elective allows real exposure to global health and facilitates life-long collaborations at an early stage in a medical career.ConclusionMalaŵi is an under-doctored and resource-poor country. North-South partnerships in Malaŵi should be strengthened with particular emphasis on healthcare innovations, such as eHealth, which allow healthcare problems to be highlighted early while preventative measures are still possible.

Bacteremia in Diarrheal Children With Severe Pneumonia.

Objectives. Diarrhea and pneumonia are the leading causes of under-5 childhood mortality. However, there is limited information on bacterial etiology of severe pneumonia in children with diarrhea. We analyzed bacterial pathogens from the blood of children under the age of 5 years. Methods. In this retrospective cross-sectional study, we studied all children having severe pneumonia with or without diarrhea admitted to the icddr,b (International Centre for Diarrheal Disease Research, Bangladesh) who had their blood culture done during January 2014 to December 2014. Results. Among a total of 159 study children, 118 had diarrhea. There were 13 bacterial isolates, and predominant organisms were gram-negative bacteria (11/13, 85%). Children with diarrhea coexisting with severe pneumonia proportionately had higher bacteremia (12/141 [10.16%] vs 1/41 [2.43%]), but the difference was not statistically insignificant (P = .186). Conclusion. We recognized that the coexistence of diarrhea and severe pneumonia had proportionately higher bacteremia, especially gram-negative bacteria compared with those without diarrhea. The results emphasize the trend of bacterial etiology of pneumonia in children with diarrhea and may warrant revised antibiotics guideline for their management.

Utility of inflammatory markers in predicting the aetiology of pneumonia in children

We aimed to investigate the diagnostic value of applying cut-off levels of inflammatory markers and to develop a prediction model for differentiation between bacterial and viral infections in paediatric community-acquired pneumonia based on C-reactive protein (CRP), neutrophil, and white cell counts (WCC). Amongst 401 children, those with bacterial pneumonia were older than those with viral pneumonia (P<0.001). Compared to viral, bacterial infections had a higher median CRP level (P<0.001), whereas WCC and neutrophil count were not different. Bacterial infections were associated with higher CRP >80 mg/L than viral infections (P=0.001), but levels <20 mg/L were not discriminatory (P=0.254). Receiver operating characteristic curve of the model for differentiating bacterial from viral pneumonia based on age, CRP, and neutrophil count produced area under the curve of 0.894 with 75.7% sensitivity and 89.4% specificity. This aetiological discriminant prediction model is a potentially useful tool in clinical management and epidemiological studies of paediatric pneumonia.

Validation of a method to predict the etiology of pneumonia in children

Identifying etiology in children with pneumonia requires time and technical resources, not always available. Therefore, the initial management of pneumonia is often based on clinical, laboratory, and/or radiographic data. Clinical prediction rules based on a combination of factors could increase diagnostic accuracy. To validate the diagnostic accuracy of a clinical prediction rule (Bacterial Pneumonia Score, BPS) to distinguish bacterial from viral pneumonia in children. Population and methods. This observational, diag- nostic test evaluation study was performed among January 2004 and December 2006. Children aged 1 month to 15 years old, hospitalized for pneumonia in whom a bacterial or viral etiology was identified were included. Children with chronic pulmonary disease, congenital heart disease, admission to the intensive care unit, underlying immunologic disease, mixed viral and bacterial infection, or inability to identify viral or bacterial pathogens were excluded. Admission data were recorded (age, temperature, WBC count and chest radiograph evaluation). BPS was then calculated (range -3 to 15 points), taking into account that a BPS > or =4 suggests bacterial pneumonia. We included 82 patients aged 1 to 96 months with pneumonia (79% viral and 21% bacterial). A BPS > or = 4 predicted bacterial pneumonia with sensibility: 94%, specificity: 34%, positive predictive value: 27%, and negative predictive value: 95%. The BPS was accurate on identifying most children with bacterial pneumonia, who required antibiotic therapy.

Viral etiology of pneumonia in children

To evaluate the viral pathogen of pneumonia in children. A total of 13 642 cases of children pneumonia in 3 years were enrolled in this study. Antigens of viral pathogen in respiratory excretion, including respiratory syncytial virus (RSV), type 1, 2 and 3 parainfluenza virus, type A and B influenza virus, and adenovirus were detected by direct immunofluorescence method. Viral pneumonia accounted for 34.3% of all cases, including 25.8% cases of RSV, 4.7% of parainfluenza virus, 2.4% of type A influenza virus, 0.2% of type B influenza virus and 1.3% of adenovirus. Coinfection was found in 20 cases, in which 17 cases (85%) were infected with RSV and another virus. Positive rates of RSV in children < or = 1 year, 1 to 3 years, and >3 years were 33.1%, 19.7% and 5.1% with a significant difference (chi(2)(trend)=763.4, P < 0.001). The positive rate of adenovirus in children < or =1 year (0.7%) was significantly lower than that in children aged 1 to 3 years and in children >3 years (2.3% and 2.5%) (all P<0.01). The positive rate of type A influenza virus in children aged 1 to 3 years was higher than that in children < or =1 year (chi(2)=18.2, P<0.01). Type 1 parainfluenza virus was found in 1.2% children aged 1 to 3 years with most prevalence (P<0.05). Infection rates of type 3 parainfluenza in children < or =1 year, 1 to 3 years, and >3 years were 4.7%, 3.2% and 1.4% respectively with a significant difference (chi(2)(trend)=52.4, P<0.01). Although there were some differences of infection rate of RSV in different years, it tended to increase from November to next April with a highest rate of 62.8%. Type 3 parainfluenza virus and Type A influenza virus were almost sporadic while type A influenza virus was epidemic in August 2003 with an infection rate of 15.7%. The highest infection rate of viral pathogen of pneumonia in children is RSV and the follows are parainfluenza, influenza and adenovirus in turn.

A role of Streptococcus pneumoniae, Мycoplasma рneumoniae and Сhlamydia pneumoniae in community-acquired pneumonia in children

This work investigated etiology of communityacquired pneumonia in children at SanktPetersburg from 1998 to 2001 using microbiological and immunological methods. S.pneumoniae was found to be a cause of pneumonia in 74.5 % of the patients and it was the leading pathogen out of proportion with the children's age. C. pneumoniae was detected in 67.3 % of the patients, prevalently in children 1 to 7 years old. The acute Мycoplasma рneumoniae respiratory infection was diagnosed in 40.4 % of the children. Non typing strains of H. influenzae were yielded in 10.2 % of the patients. Most patients had microbial associations that demonstrates multiple etiology of the current community-acquired pneumonia in children. Epidemiological rise in spread of acute respiratory C. pneumoniae infection was noted during last 4 years at Sankt-Petersburg which was thought to be a cause of a sharp increase in frequency of childhood community-acquired pneumonia.

Epidemiology and etiology of pneumonia in children in Hong Kong.

The epidemiologic and etiologic features of cases of pneumonia among 1,740 children admitted to a teaching hospital in Hong Kong over a 3-year period were studied. Of the patients, 23% were < 1 year old and 69% were < 5 years old. The incidence of pneumonia requiring admission to the hospital was 6.4 episodes per 1,000 children per year for those < 5 years of age. The overall case fatality rate was 0.15% among patients who did not have severe underlying disease before contracting pneumonia. A bacterial etiology was confirmed by blood culture for only 2% of patients. However, culture of sputum or nasopharyngeal aspirates yielded predominant or pure growth of one bacterial agent in 17% of cases. Haemophilus influenzae was the bacterial agent most frequently isolated from nasopharyngeal aspirates or sputum, followed by Streptococcus pneumoniae and Staphylococcus aureus. Of the H. influenzae isolates, 38% were resistant to ampicillin. A viral etiology was proven in 9.1% of cases, and evidence of mycoplasmal infection was found in 3.8% of cases. Respiratory syncytial virus was the most frequently identified viral agent, followed by adenovirus and influenza A virus.

Etiology of pneumonia in children.

Etiology of pneumonia in children.