Dengue hospitalizations in Bangladesh have surged by nearly 74% compared with the same period last year, with the outbreak accelerating dramatically in September and showing little sign of easing in the first three days of October.
A total of 84,369 dengue patients were hospitalized between January 1 and October 3 this year, according to the Directorate General of Health Services (DGHS).
Compared with 48,491 hospitalizations during the corresponding period last year, as cited in the data reviewed by Dhaka Tribune, this represents 35,878 additional patients, a year-on-year increase of about 74%.
Deaths have also risen substantially. The toll stood at 256 as of Saturday, against 202 by October 3 last year -- an increase of 54 deaths, or nearly 27%.
Behind the year-on-year jump is a steep deterioration since the beginning of the monsoon, culminating in September, when the country recorded by far its highest monthly caseload and death toll of 2026.
September alone accounted for 43,774 hospitalizations and 148 deaths, meaning more than half of all dengue patients hospitalized this year and nearly 58% of the fatalities were recorded in a single month.
And October has begun with little respite.
In just the first three days of the month, another 4,749 dengue patients were admitted to hospitals and 11 died, pushing the cumulative figures from 79,620 hospitalizations and 245 deaths at the end of September to 84,369 and 256 respectively.
From 2,907 to 43,774 in three months
The month-by-month figures illustrate how rapidly the outbreak has escalated.
In June, 2,907 dengue patients were hospitalized and 13 died. July saw admissions more than triple to 9,206, with 36 deaths.
The situation worsened sharply in August, when 20,536 patients were hospitalized and 43 died.
Then came September.
Hospitalizations more than doubled from August to 43,774, while deaths jumped from 43 to 148, more than three times the previous month’s toll.
The trajectory has continued into October.
In the latest 24-hour reporting period alone, six people died and another 1,608 were hospitalized across the country.
Two of the deaths occurred in Dhaka South City Corporation and two in Rajshahi division, while Khulna and Barisal divisions recorded one each.
Of the new patients, Chittagong recorded the highest number outside the capital with 319 admissions, followed by Khulna with 276 and Barisal with 215.
Hospitals in Dhaka North City Corporation admitted 171 patients and those in Dhaka South 223, while another 131 were admitted elsewhere in Dhaka division.
Rajshahi recorded 132 new patients, Mymensingh 79 and Rangpur 62.
As of Saturday, 5,631 dengue patients remained under treatment in hospitals across the country, while 78,482 of those admitted this year had been discharged.
Breeding grounds remain the key
Entomologist Prof Dr Kabirul Bashar said the continuing rise showed why mosquito-control programs cannot depend primarily on fogging or killing adult Aedes mosquitoes.
Killing adult mosquitoes provides only temporary relief if eggs and larvae remain in breeding sites, allowing another generation to emerge, he said.
Construction sites have become major breeding grounds for Aedes mosquitoes, according to Bashar, who stressed the need to hold building owners and construction companies accountable for eliminating stagnant water.
Effective control, he said, requires several measures to operate simultaneously, destroying larvae, removing stagnant water, managing the surrounding environment and maintaining public awareness.
Sporadic drives launched when dengue infections begin rising cannot deliver sustainable results, he warned.
Instead, mosquito control has to continue throughout the year, including during winter when Aedes prevalence is relatively low and authorities have a better opportunity to suppress mosquito populations before the next transmission season.
In practice, however, mosquito-control activities often become less intensive during that period, he said.
1,600 doctors being trained
With the patient load rising, the government is also strengthening clinical preparedness outside major hospitals.
State Minister for Health Dr MA Muhit said 1,600 doctors across 40 districts were receiving specialized training in dengue clinical management.
Around 350 senior physicians had previously undergone training-of-trainers sessions and were now training other doctors across the districts.
Muhit said the objective was to improve clinical management so that patients did not die because of mistakes or shortcomings in treatment and to ensure that district and upazila-level doctors were prepared if hospital admissions continued to rise.
The pressure is already visible in hospitals. Recent reporting from Dhaka found dedicated dengue wards and corners at some facilities full, forcing patients to be accommodated elsewhere as the caseload increased.
At a dengue awareness program in Mugda on Saturday, State Minister Habibur Rashid Habib called for greater public participation alongside city corporation operations, urging residents to regularly remove stagnant water and keep their homes and surroundings clean.
No timeline for respite
Despite the intensified response, health authorities cannot say when the outbreak will begin to subside.
Md Halimur Rashid, director of the Disease Control Division at DGHS, said dengue-control activities were being pursued at the highest levels of government, but the disease remained heavily influenced by rainfall, temperature and other environmental conditions.
As a result, he said, authorities could not provide a fixed timeframe for bringing the situation under control.
Bangladesh is still well below the catastrophic levels recorded during the 2023 epidemic, when 321,179 people were hospitalized and 1,705 died, the worst dengue outbreak in the country’s recorded history.
But this year’s trajectory is moving sharply in the wrong direction.
By Saturday, hospitalizations were already 74% higher than at the same point last year, deaths were up by about 27%, and more than half of the year’s patients had been recorded in September alone.
With another 4,749 hospitalizations in the first three days of October, the surge has now carried into a new month.