August Dengue Cases in Bangladesh Third-Highest in 26 Years

August Figures Rank Third in 26 Years

Bangladesh recorded its third-highest number of dengue cases and deaths for August since the country's first major outbreak in 2000, as infections continued to rise.

According to data from the Directorate General of Health Services, the country recorded 20,536 dengue hospitalisations and 43 deaths in August 2026. The figures ranked third-highest for both cases and deaths during the month of August over the past 26 years.

The situation remained concerning on September 1, when five patients died and 1,324 new cases were reported. The figure was the highest number of dengue cases reported in a single day so far this year.

2023 and 2019 Remain the Worst August Records

August 2023 remains the worst August on record for dengue cases and deaths in Bangladesh. During that month, the country recorded 71,976 cases and 342 deaths.

August 2019 ranks second, with 52,636 reported cases and 83 deaths.

Against those figures, August 2026, with 20,536 cases and 43 deaths, ranks third. While the latest totals remain substantially lower than the records set in 2023 and 2019, the scale of infections has renewed concern as Bangladesh moves through a period favourable for dengue transmission.

Experts Warn of Further Rise

Prof Kabirul Bashar of the Zoology Department at Jahangirnagar University said dengue cases were likely to continue rising through October before declining in November.

He stressed the need to identify neighbourhood-level hotspots and take immediate action through intensified mosquito control, community mobilisation and awareness campaigns.

Entomologist GM Saifur Rahman of National University said anti-mosquito drives across the country were not being conducted adequately, increasing the risk of a further rise in infections over the next two months.

Intermittent rainfall creates favourable conditions for the breeding of Aedes mosquitoes, he said. Cases are expected to decline as rainfall decreases during winter.

“The situation could deteriorate further unless the authorities take the necessary measures immediately,” Rahman warned.

Early Treatment Can Prevent Severe Outcomes

HM Nazmul Ahsan, an associate professor at Shaheed Suhrawardy Medical College Hospital, said dengue deaths could result from a combination of patient-related, viral and management factors.

Patients who arrive at hospitals with severe dengue or who are already in shock face particularly high risks, he said. Viral factors, including differences between serotypes, may also affect the severity of the disease.

Delays in hospital admission and transport can further increase the risk. Patients from remote areas may spend five to six hours in transit without proper fluid management.

“By the time they reach a government emergency department, some have extremely low or undetectable blood pressure,” he said.

Ahsan urged people with persistent fever or warning signs to seek medical care promptly, saying early diagnosis and treatment could prevent severe complications and deaths.

Severe dengue often develops on the third or fourth day of fever, while early symptoms can resemble those of other viral illnesses. He advised patients to undergo medical evaluation when fever begins, again on the third or fourth day, and once more after the fever subsides.