Fig. 3

Mean monthly trend of RRV case notifications in south east Queensland, 2001–2016. Mean monthly case numbers across the 16-year period are shown, with extreme case report values from large outbreak years indicated as outliers. Mean rates per group are indicated by X, and median by the horizontal line crossing each box. Whiskers indicate the estimated maximum and minimum case numbers per month across the 16 years (equal to the 1st and 3rd quartile −/+ 1.5 x the inter-quartile range, respectively). *Total cases reported in February 2015 (1357) were the highest ever reported in a single month