Background: Mosquito borne diseases like dengue, chikungunya form a major public health problem in Kerala. Entomological surveillance of aedes mosquito has been standardized on different indices like House index, Container index, Breateau index. In a survey covering 6 wards under the urban field practice area of MES Medical College 97.6% were found positive for mosquito breeding. Hence it was decided to conduct intensive awareness programmes. Objectives: The objective of the study was to assess the impact of intensive awareness programmes on vector density over 2014-2015. Methodology: An interventional study was conducted in Ward 29 under the urban field practice area of MES Medical College between May 2014 and November 2015. Baseline larval survey was conducted in 2014, once in the pre monsoon period (May) and three serial surveys were done following heavy rains in September, north east monsoon in October and post monsoon in November. 30 random houses were selected from ward 29 for each larval survey. A survey was conducted during December 2014 to identify the gaps in their knowledge and intensive awareness classes on mosquito borne diseases and control measures were conducted during the succeeding four months (January – April 2015). Larval surveys were repeated again in May, September, October and November in 2015. House Index, Container Index and Breateau Index were calculated. Results: All indices in the year 2014 were above the critical level and following the intensive awareness classes the indices came down but still above critical level [HI= 75, 41.5; CI= 54.34, 14.7; BI= 81,38.46]. To conclude the intensive awareness programmes were effective in reducing the menace.

Keywords: Vector Survey; Potential Breeding Sites; Positive Containers; House Index; Container Index; Breteau Index.