title: Bacterial Co-infection in Hospitalized Children with Mycoplasma pneumoniae Pneumonia.
abstract: OBJECTIVE
  To describe the frequency and impact of bacterial co-infections in children hospitalized with Mycoplasma pneumoniae pneumonia.
  
  
  METHODS
  Retrospective, descriptive study.
  
  
  METHODS
  Tertiary-care hospital in Beijing, China.
  
  
  METHODS
  8612 children admitted to Beijing Childrens Hospital from June 2006 to June 2014.
  
  
  METHODS
  According to the testing results of etiology we divided the cases into pure M. pneumoniae infection group and mixed bacterial infection group. We analyzed clinical features, hospital expenses and differences between these two groups.
  
  
  RESULTS
  173 (2%) of included children had bacterial coinfection. 56.2% of bacterial pathogens were identified as Streptococcus pneumoniae.
  
  
  CONCLUSIONS
  The most common bacterium causing co-infection in children with M. pneumoniae pneumonia was S. pneumoniae.
authors: Aerospace Center Hospital and *Beijing Childrens Hospital, Capital Medical University, China. Correspondence to: Dr KL Shen, Beijing Children's Hospital, Capital Medical University, Beijing, 56 NanlishiRd, XichengDistrict, China. wlj7008@126.com.
authors: Qing
authors: Q
authors: Song
authors: Bao-Ping
authors: BP
authors: Xu
authors: Kun-Ling
authors: KL
authors: Shen
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D060085:Coinfection / Q000453:epidemiology* / Q000382:microbiology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009177:Mycoplasma pneumoniae; D011019:Pneumonia, Mycoplasma / Q000453:epidemiology* / Q000382:microbiology*; D011018:Pneumonia, Pneumococcal / Q000453:epidemiology / Q000382:microbiology; D012189:Retrospective Studies; D013296:Streptococcus pneumoniae