Bangladesh: Elevated dengue fever activity continues in Dhaka during late July /update 2

Event

Health officials in Bangladesh report elevated dengue fever activity in Dhaka during 2021, with roughly 2,895 cases reported as of August 1 compared to 337 cases reported over a similar period in 2020. Of these cases, more than 86-percent have been reported since July 1. Dengue fever activity is likely to remain elevated as the southwest monsoon season continues. This represents the most complete information available as of August 2.

Context

Authorities reported 1,405 cases of dengue fever in Bangladesh during 2020, 101,354 cases during 2019, and 10,148 cases in 2018. The risk of dengue fever transmission in Bangladesh exists nationwide and year-round; however, the risk is highest during the rainy season, which typically occurs June-September.

A dengue fever vaccine is available in some countries. It is only recommended for individuals with a history of dengue infection and in a country with high dengue fever burden. Dengue fever spreads through the bite of an infected mosquito. Symptoms of dengue fever include a sudden onset of fever and at least one of the following: severe headache, severe pain behind the eyes, muscle and/or joint pain, rash, easy bruising, and/or nose or gum bleeding. Symptoms typically appear 5-7 days after being bitten but can develop up to 10 days after exposure. Dengue fever can progress to a more severe form known as dengue hemorrhagic fever (DHF). DHF can be fatal if it is not recognized and treated promptly.

Advice

If you have previously been infected with dengue fever, consult with your physician regarding vaccination. Avoid mosquito bites and remove standing water to reduce the number of biting mosquitoes. Seek medical attention if symptoms develop within two weeks of being in affected areas. Do not use aspirin or ibuprofen products if dengue fever is suspected, as these could exacerbate bleeding tendencies associated with the disease.