Trend of mosquito larval indices over a year in a rural area of Thrissur district, Kerala

Background: Dengue is the most widely distributed viral disease in world. Outbreak are usually seasonal, peaking during and after rainy seasons. Entomological surveillance important determining factors related to transmission order prioritize areas seasons for vector control. The objectives of study were determine larval indices aedes, assess seasonal trend major breeding site Aedes mosquitoes. Methods: A longitudinal was conducted over a period 12 months from January December Thrikkur panchayath area. From total seventeen wards, 4 wards randomly selected these, 75 houses selected. Results: surveyed 959 wet containers examined these 180 found positive. Wet containers, positive more identified season. common as per survey be plastic containers. species identified. Since breteau index between 5 -50, area studied considered moderate risk epidemics. Conclusions: Results indicated that monsoon period. So, control measures need adopted with much vigour even pre-monsoon continue season also. Plastic source commonest