Figure 9 shows the notification rate per 100,000 population for Shiga toxin-producing Escherichia coli infections in Australia, by year of diagnosis. It shows a gradually increasing trend from 0.2 per 100,000 in 2001 to 0.6 per 100,000 in 2009, before decreasing to 0.4 per 100,000 in 2010 and 2011