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Tuesday | September 29, 2026 | Dhaka

DSCC starts 12-day survey to identify dengue hotspots

 Staff Reporter
 Published: 12:01 AM, 29 September 2026

A 12-day rainy-season survey of Aedes mosquito larvae has begun across Dhaka South City Corporation (DSCC) to identify breeding grounds and high-risk areas and strengthen data-driven measures to prevent dengue.

DSCC Administrator Freedom Fighter Md Abdus Salam formally inaugurated the survey at Nagar Bhaban on Monday. The fieldwork began informally on Sunday and will continue until October 8.

Under the initiative, scientific data will be collected from 2,250 households, with 30 randomly selected households in each of the city corporation’s 75 wards.

The survey aims to determine the prevalence of mosquitoes and identify major sources of Aedes larvae across DSCC’s 10 zones.

A total of 72 field workers from DSCC and the Communicable Disease Control unit of the Directorate General of Health Services are taking part in the survey.

The modern Kobo Toolbox application is being used to improve transparency and accuracy in data collection.

Following completion of the survey, the collected data will be analysed to determine the Breteau Index (BI), House Index (HI), Container Index (CI) and Pupal Index (PI).

The Breteau Index will then be used to classify the level of dengue risk in different areas. Areas recording a BI of 20 or above will be classified as high-risk, those with a BI of 10 to 19 as moderately high-risk and areas with a BI below 10 as lower-risk.

Based on the findings, DSCC will intensify mosquito-control measures in identified hotspots, including cleanliness drives, larvicide application and special crash programmes.

Speaking at the inauguration, DSCC Administrator Md Abdus Salam said scientifically identifying Aedes breeding grounds and high-risk areas was essential to controlling dengue.

He said the survey would provide an accurate picture of the current situation in DSCC and allow the corporation to take effective measures based on the findings.

Seeking cooperation from residents, Salam said a pre-monsoon survey had identified stagnant water in and around residential premises as one of the major breeding grounds for Aedes mosquitoes.

In that earlier survey, larval density was found to be above the prescribed index in 63 of DSCC’s 75 wards, while 27 wards were declared highly vulnerable.

Based on those findings, crash programmes were conducted in different areas of the city corporation.
DSCC Chief Executive Officer Md Khaibar Rahman, Secretary Md Mashiur Rahman Khan, Chief Waste Management Officer Air Commodore Md Mahbubur Rahman Talukder and Chief Health Officer Dr Jahane Ferdous Binte Rahman, among other senior officials, attended the ceremony.