Figure 1.
WHO method for determining thresholds.
Figure adapted from the WHO Global Surveillance Standards for Influenza [7].
Figure 2.
Mean, upper 90% Confidence Interval and 95th percentiles for six surveillance datasets.
Figure 3.
Annual data (red) plotted against the ten year average season (black) for the GPSS, 2002-2011.
Figure 4.
Categories of influenza season in Victoria for six surveillance datasets, 2002-2011.