Epidemiology of influenza from 2017 to 2022 in a national children’s regional medical center

The influenza viruses infection rate in 3 months to 14 years participants ranged from 3.03 to 25.7%, and the positive rate increased with age. No significant difference was observed in different sexes and subtypes of influenza. However, the relatively high prevalence of influenza A/H3N2 and high prevalence of all four subtypes indicate more attention to influenza infection should be paid in summer and winter.