Dengue fever is a mosquito-borne infection transmitted by the Aedes aegypti mosquito, commonly known as the “Asian tiger mosquito” due to its striped appearance. This mosquito typically bites during the day. Dengue fever is prevalent in over 100 countries across the tropics and subtropics, with approximately 50 million cases reported globally each year, and the numbers are rapidly increasing.
Most dengue infections occur in Southeast Asia, South and Central America, Mexico, Africa, the Indian subcontinent, Hawaii, and the Pacific. Urban areas pose a higher risk than rural areas as the dengue-carrying mosquito thrives in stagnant water found in drain pipes, old tires, cans, and flower pots.
If infected with dengue fever, symptoms typically include a high fever, often referred to as “breakbone fever” due to the intense pain it causes, along with a headache, nausea, and vomiting. Three to five days after the onset of fever, a rash may appear on the trunk. Dengue fever can make you feel very unwell, and there is no specific treatment for the illness. A second dengue infection can result in more severe symptoms and can be potentially fatal for some individuals. The only way to diagnose dengue fever is through a blood test. Therefore, if you experience flu-like symptoms while abroad or after returning home, seek medical advice urgently.
Currently, there is no vaccine available for dengue fever, making it crucial to protect yourself with effective bite prevention measures:
Taking these precautions can significantly reduce the risk of dengue fever. For more information on how to protect yourself from mosquito-borne illnesses, contact our travel health experts.
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