Additional file 1: of Temporal patterns of influenza a subtypes and B lineages across age in a subtropical city, during pre-pandemic, pandemic, and post-pandemic seasons

Figure S1. Heatmaps and wavelet power spectrum of influenza virus. A, Time series of monthly age-specific positive rates of A/H3N2, seasonal A/H1N1, A/H1N1pdm09, Victoria, and Yamagata. B, Wavelet power spectrum of the monthly positive rates of influenza subtypes and lineages. Black lines highlight periodicities that reach statistical significance of 95% based on 1000 Monte Carlo simulation. The region outside the white-curved cone indicate the presence of edge effects. The power values were shown in the panel on the right. Time series have been square-root transformed. (EPS 2380 kb)