Officials also conduct the first round of Inside Residual Spraying with insecticide, take up anti-larval operations in the village well and make house-to-house visits to ensure no patient is left out Officials also conduct the first round of Inside Residual Spraying with insecticide, take up anti-larval operations in the village well and make house-to-house visits to ensure no patient is left out Health Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu