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Updated: Jan 19, 2026
Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Community-acquired pneumonia among children: the latest evidence for an updated management
Cristiana M Nascimento-Carvalho1
1Universidade Federal da Bahia (UFBA), Faculdade de Medicina da Bahia, Departamento de Pediatria e Programa de Pós-Graduação em Ciências da Saúde, Salvador, BA, Brazil.
Insights
Community-acquired pneumonia in children under 5 is now mainly caused by viruses, not bacteria. Key indicators for severe disease and hospitalization include hypoxemia and increased work of breathing.
Area of Science:
- Pediatrics
- Infectious Diseases
- Respiratory Medicine
Background:
- Community-acquired pneumonia (CAP) remains a significant cause of childhood morbidity and mortality worldwide.
- Recent advancements in vaccination and diagnostic techniques have reshaped our understanding of CAP etiology and management.
Purpose of the Study:
- To synthesize the latest evidence on the diagnosis, severity assessment, and treatment of CAP in children under 5 years.
- To provide clinicians with up-to-date, evidence-based information for managing pediatric CAP.
Main Methods:
- A comprehensive literature search was performed using PubMed with specific keywords related to pediatric CAP.
- Articles were screened based on title and abstract, with relevant papers selected for full-text review to identify the latest evidence.
Main Results:
- Respiratory viruses are now the predominant cause of CAP in young children, largely due to widespread bacterial conjugate vaccines.
- Hypoxemia (oxygen saturation ≤96%) and increased work of breathing are key indicators of CAP. Wheezing predicts viral infection.
- Predictors of mortality and hospitalization include inability to feed, vomiting, convulsions, lethargy, and oxygen saturation <90%. Moderate/large pleural effusions and multilobar infiltrates indicate severe disease.
Conclusions:
- The landscape of childhood community-acquired pneumonia has evolved significantly over the past three decades.
- Current management strategies must account for the shift towards viral etiologies and updated indicators of severity and treatment protocols.
Objective:
To provide cutting-edge information for the management of community-acquired pneumonia in children under 5 years, based on the latest evidence published in the literature.
Data Source:
A comprehensive search was conducted in PubMed, by using the expressions: "community-acquired pneumonia" AND "child" AND "etiology" OR "diagnosis" OR "severity" OR "antibiotic". All articles retrieved had the title and the abstract read, when the papers reporting the latest evidence on each subject were identified and downloaded for complete reading.
Data Synthesis:
In the era of largely implemented bacterial conjugate vaccines and widespread use of amplification nucleic acid techniques, respiratory viruses have been identified as the most frequent causative agents of community-acquired pneumonia in patients under 5 years. Hypoxemia (oxygen saturation ≤96%) and increased work of breathing are signs most associated with community-acquired pneumonia. Wheezing detected on physical examination independently predicts viral infection and the negative predictive value (95% confidence interval) of normal chest X-ray and serum procalcitonin <0.25ng/dL was 92% (77-98%) and 93% (90-99%), respectively. Inability to drink/feed, vomiting everything, convulsions, lower chest indrawing, central cyanosis, lethargy, nasal flaring, grunting, head nodding, and oxygen saturation <90% are predictors of death and can be used as indicators for hospitalization. Moderate/large pleural effusions and multilobar infiltrates are predictors of severe disease. Orally administered amoxicillin is the first line outpatient treatment, while ampicillin, aqueous penicillin G, or amoxicillin (initiated initially by intravenous route) are the first line options to treat inpatients.
Conclusions:
Distinct aspects of childhood community-acquired pneumonia have changed during the last three decades.
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