| Summary: | The Northern Territory Top End Health Service, Medical Entomology Section and the City of Darwin council carry out a joint Mosquito Engineering Program targeting the rectification of mosquito breeding sites in the City of Darwin, Northern Territory, Australia. In 2005, an investigation into potential subterranean stormwater breeding sites in the City of Darwin commenced, specifically targeting roadside stormwater side entry pits. There were 79 side entry pits randomly investigated for mosquito breeding in the Darwin suburbs of Nightcliff and Rapid Creek, with 69.6% of the pits containing water holding sumps, and 45.6% of those water holding sumps breeding endemic mosquitoes. <i>Culex quinquefasciatus</i> was the most common mosquito collected, accounting for 73% of all mosquito identifications, with the potential vector mosquito <i>Aedes notoscriptus</i> also recovered from a small number of sumps. The sumps were also considered potential dry season maintenance breeding sites for important exotic <i>Aedes</i> mosquitoes such as <i>Aedes aegypti</i> and <i>Aedes albopictus</i>, which are potential vectors of dengue, chickungunya and Zika virus. Overall, 1229 side entry pits were inspected in ten Darwin suburbs from 2005 to 2008, with 180 water holding sumps identified and rectified by concrete filling.
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