Figure 1

<p>Map of the greater Melbourne area, showing the location and year-of-occurrence of the eight legionellosis outbreaks, designated by codes A-H. Red circle shows the central Melbourne business district. ‘A’ represents the location Melbourne aquarium aquarium outbreak and is close to centre of the Melbourne. Inset shows the location of Melbourne (red circle) within the State of Victoria in south east Australia. </p> <p> </p>