Analysis Of Microbial Etiology With 83 Cases Of Community Acquired Pneumonia

Objective:The clinical data of 83 cases were retrospective survey to determine the microbial etiology of hospitalized children with CAP.Methods:A total of 83 pneumonia children were enrolled in the study who were hospitalized in Pediatric ward,the Second Affiliated Hospital of Kunming Medical University over the period of 1 years from December 2016 to December 2017 and underwent various microbiological studies in the form of sputum and blood culture as well as IgM serology diagnostic techniques for detection of common typical and atypical respiratory bacteria and viruses.All the microbiological studies were performed in all patients.Results:A total of 83 patients were enrolled.An etiology was identified in 72 patients(86.6%).Bacterial pathogens were detected in 34(40.9%)of the cases while viral pathogens were detected in 23(27.7%).Co-infection with more than one etiologic agent was evident in 15 patients(18.1%).The commonest atypical bacteria was Mycoplasma pneumoniae(n = 27,32.5%),whereas the commonest viral etiology was parainfluenza viruses(n = 11,13.3%)followed by respiratory syncytial virus(n=9,10.8%).The most common typical bacterial cause of pneumonia was H.influenza(n = 4,4.8%),followed by E.coli(n=3,3.6%)and Pseudomonas aeruginosa(n = 2.2.4%).The most common co-infection was seen with Mycoplasma pneumonia and parainfluenza virus(n=6,7.2%).There were statistically significant differences in detection rates of pathogens(mycoplasma,viral,typical bacteria,and co-infections among different age groups(P<0.05).Conclusion:Atypical bacteria and viruses play an important role as etiological agents in pneumonia in children.Mycoplasma pneumoniae was the most commonly detected organisms in children with CAP.IgM test is useful for rapid detection of atypical bacteria and viruses.