Dengue threat lurks

Aedes larvae in abundance in 25 DNCC, DSCC wards; multi-storey buildings top mosquito hotspots

Staff Correspondent

15 August, 2020 12:00 AM printer

Dengue threat lurks

A large part of Dhaka city is at risk of a dengue outbreak as high presence of Aedes mosquito has been found in different areas of both city corporations, according to a survey.     

National Malaria Elimination and Aedes Transmitted Disease Control Programme under the Directorate General of Health Services (DGHS) conducted a survey within the jurisdiction of Dhaka South City Corporation (DSCC) and Dhaka North City Corporation (DNCC).

Dr Afsana Alamgir Khan, deputy programme manager of the National Malaria Elimination and Aedes Transmitted Diseases Control Programme presented the report of the survey titled ‘Monsoon Aedes Survey 2020’ at a programme on Thursday.

At least 25 wards in Dhaka city have been flagged as vulnerable to the risk of a dengue outbreak amid the ongoing coronavirus crisis.

The DGHS conducted the monsoon survey of 2,999 households in 100 areas (41 of DNCC and 59 of DSCC) from Jul 19 to 28 during the monsoon to see the concentration of the vectors of Aedes, Chikunguniya and Zia virus.

As per the index, highest BI 43.3 was found in Kalyanpur, Paikpara and Moddhya Paikpara of DNCC while BI 40 was found in Khilkhet, Kuril and Niknja under the DNCC and Mirhajaribagh, Dholaipar and Gendaria in DSCC.

According to the survey, 15.6 percent Aedes larvae were found on flooded floor, 12.17 percent in plastic drums, 9 percent in plastic buckets, 8.52 percent in abandoned tyres, 8.27 percent in flower vases and trays, 6.08 percent in water tanks, 5.11 percent in earthen pots, 3.65 percent in plastic bottles, and 2.92 percent in plastic mugs.

The top breeding places include multi-storey buildings 51.34 percent, under construction buildings 20.32 percent, slum areas 12.83 percent, single buildings 12.57 percent and abandoned lands 2.94 percent.

The containers of the Aedes mosquito are multi-storey buildings 50.61 percent, construction sites 21.17 percent, slum areas 13.14 percent, independent houses 12.41 percent and vacant lands 2.48 percent.