Etiological Characteristics of Community-acquired Pneumonia and Levels of Serum Procalcitonin,Vitamin A and Vitamin D in Infants in Yingtan
Objective:To analyze etiological characteristics of community-acquired pneumonia and levels of serum procalcitonin(PCT),vitamin A and vitamin D in infants in Yingtan.Method:A retrospective collection was performed on case data of 80 infants with community-acquired pneumonia in Guixi People's Hospital between June 2020 and June 2023.The sputum samples were collected from all infants for bacterial identification and viral test.The etiological characteristics were analyzed.According to disease severity,infants were divided into severe pneumonia group(n=28)and mild pneumonia group(n=52).The levels of serum PCT,vitamin A and vitamin D in the two groups were compared.Result:Among the 80 infants,there were 42 cases(52.50%)with bacteria,mainly on Streptococcus pneumoniae(11 cases,26.19%)and Haemophilus influenzae(9 cases,21.43%).Among the 80 infants,there were 49 cases(61.25%)with viruses,mainly on respiratory syncytial virus(RSV,26 cases,53.06%),influenza virus A(IVA,6 cases,12.24%)and type 1 parainfluenza virus(PIV1,5 cases,10.20%).In infants with age of≤3 years,detection rate of RSV was the highest(41.67%),followed by PIV1(8.33%).In infants with age of 4-5 years,detection rate of RSV was the highest(18.75%),followed by IVA(12.50%).PCT level in severe pneumonia group was higher than that in mild pneumonia group(P<0.05),while levels of vitamin A and 25-(OH)D3 were lower than those in mild pneumonia group(P<0.05).Conclusion:Streptococcus pneumoniae and RSV are the first bacterial pathogen and viral pathogen of community-acquired pneumonia in infants in Yingtan,respectively.Serum PCT,vitamin A and vitamin D can be applied to clinically determine the severity of community-acquired pneumonia.
Community-acquired pneumoniaEtiological characteristicProcalcitoninVitamin AVitamin D
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