Dengue cases in Chattogram have been on the rise each November in recent years, despite the usual peak of the disease occurring between July and October. Data from the Chattogram Civil Surgeon’s Office revealed a surge, with 130 new cases reported in the first three days of this month alone. Comparatively, there were 990 cases in October, 935 in September, 705 in August, and 430 in July.
This pattern has persisted for four consecutive years starting from 2022. In that year, 2,640 cases were identified between July and October, while 2,007 cases were reported in November alone. In 2023, there were 12,003 cases from July to October and 1,254 in November. In 2024, 2,737 cases were recorded between July and October, with 1,028 cases in November.
However, the number of cases typically decreases in December, with 730 cases in 2022, 375 in 2023, and 360 in 2024. The most severe year was 2023, with 107 dengue-related deaths. In comparison, there were 41 deaths in 2022, 45 in 2024, and 20 reported deaths this year.
Dr. Tauhidul Anwar, Deputy Civil Surgeon of Chattogram, attributed the rise in November dengue cases to various factors. He highlighted the shift of dengue from a seasonal to an endemic disease in Bangladesh due to increasing temperatures and shorter winters. Changes in rainfall patterns, with sporadic rainfall leaving stagnant water in potholes, have provided ideal breeding conditions for Aedes mosquitoes. Additionally, higher humidity levels, reaching 90–95 percent in November, have further facilitated mosquito proliferation.
The Chattogram Civil Surgeon’s Office has pinpointed 25 dengue hotspots in the city, including areas like Bandar, CEPZ, Halishahar, and Kotwali. Most dengue patients are receiving treatment at Chattogram Medical College Hospital, Chattogram General Hospital, and private clinics. Dr. Ekram Hossain from Chattogram General Hospital emphasized the importance of seeking medical help promptly upon experiencing dengue warning signs to prevent critical conditions.
Dr. Imam Hossain Rana, Chief Health Officer of Chattogram City Corporation, mentioned that city workers are actively spraying mosquito repellents and larvicides in various areas. Residents are advised to remain vigilant and prevent water accumulation around their residences to curb mosquito breeding.