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Published on: February 23, 2014
Atypical pneumonias in children
1Department of Pediatrics, SUNY Health Science Center, Brooklyn, USA.
Abstract:
The major agents responsible for atypical pneumonia in children include a wide variety of organisms, one Mycoplasma species, two Chlamydia species, a rickettsia, and one fastidious bacterium. Mycoplasma pneumoniae and C. pneumoniae together may be responsible for over 40% of these infections. Recognition of the role that these agents play in pneumonia is important since many of the diagnostic methods used to detect these organisms are not available in most hospital microbiology laboratories. If you don't look, you won't find. Epidemiologic factors can provide valuable clues, especially with the less frequently encountered infections, since it is almost impossible to make a clinical diagnosis on which to base treatment. A reliable history of avian exposure should suggest psittacosis, exposure to sheep or pregnant cats suggests Q fever, and children with underlying malignancy or immunodeficiency or those receiving systemic steroids may have legionnaires' disease. None of these organisms are susceptible to beta-lactam antibiotics. Sometimes the diagnosis is not considered until after the child has failed to respond to a penicillin or a cephalosporin and routine bacteriology is negative. In view of the role played by M. pneumoniae and C. pneumoniae, a macrolide may be the first-line antibiotic for atypical pneumonia in children.
Insights
Atypical pneumonia in children is often caused by Mycoplasma pneumoniae and Chlamydia pneumoniae. Early recognition and appropriate antibiotic treatment, such as macrolides, are crucial for effective management.
Area of Science:
- Pediatric Infectious Diseases
- Microbiology
- Pulmonology
Background:
- Atypical pneumonia in children is caused by diverse pathogens, including Mycoplasma and Chlamydia species.
- Mycoplasma pneumoniae and Chlamydia pneumoniae are significant contributors, potentially causing over 40% of cases.
- Standard diagnostic methods for these atypical pathogens are often unavailable in hospital laboratories.
Purpose of the Study:
- To highlight the importance of recognizing atypical pneumonia agents in children.
- To emphasize the role of epidemiologic factors in diagnosing less common infections.
- To guide appropriate antibiotic selection for atypical pneumonia.
Main Methods:
- Review of causative agents of atypical pneumonia in pediatric populations.
- Analysis of diagnostic challenges and limitations in routine microbiology.
- Correlation of epidemiological clues with specific etiological agents.
Main Results:
- Mycoplasma pneumoniae and Chlamydia pneumoniae are leading causes of atypical pneumonia in children.
- Clinical diagnosis is often challenging, necessitating consideration of epidemiological data.
- Failure to respond to beta-lactam antibiotics suggests atypical pathogens.
Conclusions:
- Epidemiological history is vital for suspecting specific atypical pneumonia agents.
- Macrolides are recommended as first-line antibiotics for Mycoplasma and Chlamydia pneumoniae infections in children.
- Timely diagnosis and targeted therapy are essential for improved outcomes in pediatric atypical pneumonia.
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