Dhaka, June 25 -- Barguna, a coastal district in southern Bangladesh, is facing a precarious dengue outbreak, with Aedes mosquito density reaching eight times the high-risk threshold in some areas, according to a recent government survey.

The Institute of Epidemiology, Disease Control and Research (IEDCR) found that the Breteau Index, a scale to measure mosquito infestation, stood at 163.04 in Barguna Sadar, far above the danger level of 20.

In the municipal area, the index was 47.10, more than double the threshold.

The findings, shared by IEDCR Director Tahmina Shirin at a press conference in Dhaka on Wednesday, suggested the outbreak is being driven by water stored in open drums and containers due to a local drinking water shortage....