This figure shows the number of cases of DENV infection acquired in Australia, overseas, and with unknown place of acquisition for Australia between 2006 and 2011 in each state or territory of Australia. Locally-acquired cases peaked in late 2008 and early 2009, with an outbreak of locally acquired DENV infection in north Queensland. The number of overseas acquired cases peaked in 2010, but is still higher in 2011 than it was between 2006 and 2008