Five dengue cases were reported in mid 2013 from an urban area, which were in excess compared to previous year (2012; 2 cases) during the same period and predicting a dengue outbreak an entomological investigation was carried out to assess the vector indices. Aims and objectives: To conduct an entomological survey on dengue vectors and to plan the control measures in an outbreak situation. Methodology: The larval survey was conducted in 200 houses; 50-100 on an average per locality, and the

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... ae of dengue vector were identified to analyze the various indices. Results: The various vector indices were derived; house index of 24% and Breteau index of 44.6% were in excess of actual prescribed norms, which have possibly leaded to an outbreak. Conclusion: Vector indices are important variables, which help in planning, management and control of an outbreak situation, to break the man, host chain and help in prevention of such excursions.