Epidemiology of influenza virus reinfection in Guangxi, China: a retrospective analysis of a nine-year influenza surveillance data: Characteristics of influenza virus reinfection

•Reinfection defined as experienced more than two independent attacks regardless of subtypes•The median age at the first influenza virus infection was 4.5 (inter quartile range, 2.0–7.5) years•Reinfection was similar with influenza infection occurred in autumn and winter•The recurrent episode occurred 1.2–96.1 months between two consecutive onsets•No subtypes analysis due to the low number of laboratory-confirmed diagnoses