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21 Nov 2023 | 07:53 AM UTC

Mali: Elevated dengue fever activity reported in multiple regions, especially Bamako, through November

Elevated dengue fever activity reported in multiple regions in Mali through November. Bamako region most affected. Avoid mosquito bites.

Warning

Health authorities have reported elevated dengue fever activity in multiple regions in Mali, with more than 2,400 suspected cases (336 confirmed cases) reported Sept. 9-Nov. 9. This is compared to no cases reported since 2020 when two cases were recorded. Bamako is most affected, reporting the highest disease activity. Other areas reporting dengue fever cases include Koulikoro, Mopti, Ségou, and Sikasso. Health authorities have implemented vector control measures in the affected regions and urged the public to clean up their environment to prevent mosquito breeding. This report represents the most complete data available as of Nov. 21.

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.

Dengue fever is considered a year-round, nationwide threat in Mali; however, the risk is highest during and immediately following the rainy season, which typically occurs from May to September. Health authorities identified two cases of dengue fever in 2020, and roughly 11 suspected, and nine confirmed cases in 2019.

There are two dengue fever vaccines, Dengvaxia and Qdenga. It is only recommended for individuals with a history of dengue infection and in a country with a high dengue fever burden. Dengue fever is transmitted through the bite of an infected mosquito. The risk of infection is often highest in urban and semi-urban areas. 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 in a timely manner.