Epidemiology of Community-Acquired Pneumonia in Children

To the Editor .— We read the recent article by Michelow et al,1 “Epidemiology and Clinical Characteristics of Community-Acquired Pneumonia in Hospitalized Children,” with great interest. One hundred fifty-four children were enrolled in this study, and blood or pleural fluid cultures, pneumolysin-based polymerase chain reaction assays, and serologic tests were used to clarify the epidemiology. The study indicated that Streptococcus pneumoniae , Mycoplasma pneumoniae , Chlamydia pneumoniae , and respiratory viruses were the major pathogens involved …