Abstract：ObjectiveTo analyze the etiological characteristics of community-acquired pneumonia(CAP)in children in Shanwei city in recent years.MethodsA total of 1254 children with CAP from January 2013 to December 2016 were collected from outpatient clinics.They were divided into preschool group,infant group,and neonatal group based on different ages.The detection of common bacteria,virus,mycoplasma and mixed infection was compared as well as the distributions of these bacteria,virus,and mycoplasma among four seasons.ResultsThe positivity rate of bacterial detection was 55.50%,and 696 strains were detected.Among these detected strains,Hemophilus parainfluenzae took up for 41.67%,followed by Streptococcus pneumoniae accounting for 25.00%,which were higher than the other bacteria.The viral positivity rate was 35.01%,of which 68.34%for RSV and 17.77%for ADV,higher than other viruses in significant differences.The proportion of detections of virus and mycoplasma in the neonatal group was the highest.There were great differences in Staphylococcus aureus,Escherichia coli,RSV,and PIV3 among three groups.54.79%children suffering from bacterial and viral infection,which was the highest in the neonatal group.The positivity rate of mycoplasma was 33.25%. The total detection rates of bacteria in spring and winter were the highest.The Hemophilus influenza was detected in spring in highest detection rate.In winter,the total detection rate of virus was highest,of which RSV,PIV3,and ADV were frequently detected in winter,spring,and summer respectively(all P＜0.05).The possibility of mycoplasma detection is higher inspringcomparedwithother seasons(P＜0.05).ConclusionMycoplasma infection in CAP children in Shanwei city is common in recent years.Haemophilus paragallinus is the primary bacterial pathogen,RSV as the primary viral pathogen,and the main mixed infection pathogen is virus combining with bacterium.Spring and winter are the active periods for bacteria,viruses,mycoplasmas in higher detection rates.
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