Marking National Dengue Day, Department of Health and Family Welfare, along with the office of the District Vector-Borne Diseases Control Officer, has organised an awareness rally in city tomorrow. The rally, which will be flagged off by District Health Officer Dr. R. Venkatesh at 10 am at the premises of the Primary Health Centre in Old Agrahara here, will pass through Chamaraja Double Road, Vani Vilas Road, Narayana Shastri Road, before returning to the starting point.