Respiratory virus infection and epidemiological characteristics of children with influenza-like illness
Objective To investigate the infection of different respiratory viruses in local children with influenza-like diseases and the epidemic characteristics of various respiratory viruses,and to provide evidence for the prevention and treatment of influenza-like diseases in local children.Methods A total of 214 children with influenza-like illness were selected from Zhoushan Women and Children's Hospital,Zhejiang Province from February 2022 to January 2023.The children were grouped according to age and sex,and the gender,age and seasonal distribution of the children were analyzed.Results There was no significant difference in the detection of respiratory virus between different genders(P>0.05).The positive rate of influenza A virus(FluA)antigen detection in male children was the highest(91.8%),and the positive rate of influenza B virus(FluB)and adenovirus(ADV)were the lowest(1.4%).The positive rate of FluA virus antigen detection in female children was the highest(91.4%),and the positive rate of other virus antigens was 1.9%.The positive rate of FluA virus antigen detection in children aged 3 to<6 years was lower than that in children aged ≥ 6 years and 0 to<3 years,and the positive rate of ADV virus antigen detection and RSV virus antigen detection was higher than that in children aged≥ 6 years and 0 to<3 years,the differences were statistically significant(P<0.05).Seasonal distribution showed that the infection rate of respiratory virus was the highest in spring,followed by winter,autumn and summer.Conclusion The positive rate of respiratory virus antigen detection increased in the past two years.FluA is the main respiratory virus infected by children with influenza-like diseases.RSV and FluA are seasonal,and the main epidemic seasons are spring and winter.Children of different ages can be infected with different respiratory viruses.
Influenza-like diseaseRespiratory virusEpidemiologyInfluenza A virus