Chad: Elevated dengue fever activity reported in multiple areas, especially Ouaddai Region, through August /update 1

Event

Local health officials have declared an outbreak of dengue fever in multiple areas in Chad as of Aug. 27, with 26 confirmed cases reported since Aug. 3. This is the first dengue fever outbreak reported in Chad. Abeche district in Ouaddai Region (19 cases) is the most affected, followed by Biltine district in Wadi Fira Region (4 cases), and N'Djamena district in the N'Djamena Region (3 cases). Health authorities have implemented risk communication and community engagement activities to educate the public on mosquito bite prevention. Epidemiological investigations and surveillance are ongoing in affected districts. This report represents the most complete information available as of Aug. 30.

Context

Dengue fever is a nationwide, year-round threat in Chad; however, risk is typically highest May-October. A dengue fever vaccine is available in some countries. It is only recommended for individuals with a history of dengue infection and those in a country with a high dengue fever burden. Symptoms of dengue fever include a sudden onset of fever and at least one of the following: a 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.