An official of the Health Department said 34 cases of dengue and 28 cases of malaria were reported during the corresponding period last year. Not even a single case of chikungunya has been reported so far whereas two cases were reported last year. An extensive house-to-house survey is underway to check the source of vector-borne diseases. “Community participation is the key to fight vector-borne diseases. Residents should shoulder the responsibility of tackling mosquitogenic sources on war footing to prevent any outbreak of vector-borne diseases,” the health official said..