The Medical Entomology Branch (MEB) of the Centre for Disease Control (CDC) in the NT Department of Health and Community Services (DHCS) is currently at the forefront of an eradication program to rid the town of Tennant Creek and the NT of the dengue mosquito. The dengue mosquito Aedes aegypti is capable of transmitting the dengue virus that causes a serious and potentially fatal illness. Dengue outbreaks caused hundreds of deaths in South East Asia last year, and at least one death in north Queensland. The NT has been free of Aedes aegypti and hence dengue disease since the late 1950s. This is despite many instances of importations from overseas into port areas of Darwin and their immediate elimination by AQIS and MEB using larval control, chlorination of receptacles to kill eggs, and adult fogging.