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Background <p>Chlamydia pneumoniae pneumonia (CPP) in children often presents with mild clinical manifestations, leading to less clinical attention. This study aimed to compare the clinical features of Mycoplasma pneumoniae pneumonia (MPP) and CPP in pediatric patients and to identify risk factors for lobar involvement in CPP.</p> Methods <p>We conducted a retrospective analysis of 145 children with CPP and 145 contemporaneously hospitalized children with MPP. Clinical characteristics were compared between the two groups. Patients with CPP were further stratified into lobar pneumonia and bronchopneumonia subgroups to assess risk factors for lobar consolidation.</p> Results <p>Children with CPP were significantly older than those with MPP 11.00(8.33–12.42)years vs. 6.20 (4.00–8.00)years, <i>p</i> &lt; 0.05). The CPP group exhibited lower peak fever, shorter febrile duration, a higher incidence of chest pain, and lower rates of tachypnea and hypoxemia (all <i>p</i> &lt; 0.05). Laboratory findings showed significantly higher eosinophil counts and lower levels of C-reactive protein (CRP), procalcitonin (PCT), and lactate dehydrogenase (LDH) in CPP patients compared to MPP patients (all <i>p</i> &lt; 0.05). Lobar pneumonia accounted for 61.4% of CPP cases. On binary logistic regression analysis, decreased breath sounds was identified as a risk factor for lobar involvement in CPP.</p> Conclusions <p>Compared to MPP, CPP patients is characterized by more frequent chest pain, lower inflammatory marker, and higher eosinophil counts. The presence of decreased breath sounds may serve as a clinical indicator for lobar pneumonia in children with C. pneumoniae infection.</p>

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Comparative analysis of chlamydia pneumoniae pneumonia and Mycoplasma pneumoniae pneumonia in children

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月15日

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  • Yongkang Wang,
  • Tianyu Huang,
  • Weikang Gao,
  • Yun Liu,
  • Wenna Shen,
  • Tingting Yang,
  • Hongchuan Yu,
  • Xinrong Sun

摘要

Background

Chlamydia pneumoniae pneumonia (CPP) in children often presents with mild clinical manifestations, leading to less clinical attention. This study aimed to compare the clinical features of Mycoplasma pneumoniae pneumonia (MPP) and CPP in pediatric patients and to identify risk factors for lobar involvement in CPP.

Methods

We conducted a retrospective analysis of 145 children with CPP and 145 contemporaneously hospitalized children with MPP. Clinical characteristics were compared between the two groups. Patients with CPP were further stratified into lobar pneumonia and bronchopneumonia subgroups to assess risk factors for lobar consolidation.

Results

Children with CPP were significantly older than those with MPP 11.00(8.33–12.42)years vs. 6.20 (4.00–8.00)years, p < 0.05). The CPP group exhibited lower peak fever, shorter febrile duration, a higher incidence of chest pain, and lower rates of tachypnea and hypoxemia (all p < 0.05). Laboratory findings showed significantly higher eosinophil counts and lower levels of C-reactive protein (CRP), procalcitonin (PCT), and lactate dehydrogenase (LDH) in CPP patients compared to MPP patients (all p < 0.05). Lobar pneumonia accounted for 61.4% of CPP cases. On binary logistic regression analysis, decreased breath sounds was identified as a risk factor for lobar involvement in CPP.

Conclusions

Compared to MPP, CPP patients is characterized by more frequent chest pain, lower inflammatory marker, and higher eosinophil counts. The presence of decreased breath sounds may serve as a clinical indicator for lobar pneumonia in children with C. pneumoniae infection.