Dengue epidemic

There have been thousands of cases of dengue fever in the Commonwealth Games city of Delhi and more than a dozen confirmed cases of dengue fever in Cairns in recent weeks. As outbreaks are becoming more common is there anything we can do to stop the spread of dengue fever and its favourite carrier, the aedes aegypti mosquito? Or should we be more concerned with other nasty mozzies and the viruses they can transmit? Reporter Ian Townsend.