Abstract
Objective To investigate the detection results and epidemiological characteristics of human adenovirus (HAdV) among children with community acquired pneumonia (CAP) in Hunan province. Methods A descriptive retrospective survey was conducted to investigate the clinical epidemiological data of 33 056 children with CAP admitted to the Children′s Medical Center of Hunan People′s Hospital from May 1st, 2014 to April 30th, 2019.The seasonal distribution and demographic characteristics of HAdV infection were analyzed. Results (1) A total of 33 056 children with CAP were included in this study.A total of 3 770 children with HAdV positive were detected, with a total detection rate of 11.40% (3 770/33 056). From May 2014 to April 2019, the detection rates of adenovirus in different years were 13.76%, 8.57%, 7.94%, 9.53%, 12.36% and 24.75% respectively.Adenovirus detection rate reached its peak in 2019.(2) The detection rate of HAdV among male children were higher than that among female children (χ2= 6.374, P=0.012). Among 3 770 children with HAdV infection, 3 036 (80.53%) were from 6 months to 5 years old.The detection rate of adenovirus were different in different age groups.The highest detection rate was 16.65% in 3 to 5 years old group (χ2=526.494, P<0.001). Among children with severe pneumonia, the detection rate of adenovirus was 18.43% (415/2 252). The detection rate of adenovirus was the highest in the age group of 6 months to 1 years, and the difference was statistically significant(χ2=71.485, P<0.001). (3) The detection rate of adenovirus was the lowest in autumn, and the other three seasons were all high- incidence seasons (χ2= 268.744, P<0.001). (4) The hospitalization days of adenovirus pneumonia were longer than those of non-adenovirus pneumonia (Z=-10.419, P<0.001). Conclusion The prevalence of HAdV infection is related to age, season and sex.The susceptibility of adenovirus varies with severity of pneumonia.We should be vigilant against the outbreak of adenovirus infection characterized by years. Key words: Community acquired pneumonia; Adenovirus; Children; Epidemiology
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