Fig. 4

Monthly pathogen-specific incidence per 1000 population of ILI. A incidence in < 2 years. B incidence in 2–5 years. InfA, influenza type A. infB, influenza type B. RSV, respiratory syncytial virus. Left upper figure showed incidence of ILI in each age group from Jan 2010 to Dec 2012. The other figures showed pathogen-specific monthly incidences of each pathogen calculated by Bayesian methods. After 1,000 times trials to obtain incidence based on equations, median of incidences were shown in middle undashed line with 25–75% of distribution (shaded area) and 2.5–97.5% (dashed line). Means of median incidences in each month were calculated and shown in middle of figures