Dengue is a viral illness transmitted to humans by the bite of an infected dengue mosquito. These mosquitoes, primarily the Aedes aegypti species, become carriers when they feed on the blood of a person already infected with the dengue virus. Afterward, they can pass the virus to others through bites.
There is no specific cure for dengue fever, but supportive care can help manage symptoms.
Use insect repellents on exposed skin and wear protective clothing like long sleeves and pants.
Sleep under treated nets, especially in regions with high mosquito activity.
Regularly empty or cover containers holding stagnant water, such as flower pots, old tires, and buckets.
Use screens on windows and doors to keep mosquitoes out.
Mosquito traps can help control mosquito populations around your home.
The Dengvaxia vaccine, which prevents dengue fever, is available in some countries. Only those who have previously suffered dengue are advised to use it. If administered to someone without prior exposure, it may increase the risk of severe disease in the future. Hence, the vaccine is not suitable for widespread use.
Seek medical attention if:
Taking timely precautions and understanding the causes of dengue mosquito infestations can significantly reduce the risk of contracting this disease. Always consult a healthcare provider if you suspect dengue fever for accurate diagnosis and dengue treatment.
In severe cases, Dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) can develop, leading to more serious complications like:
In severe cases, Dengue can cause:
If you or someone you know has Dengue and shows signs of severe illness (persistent vomiting, bleeding, rapid breathing, or confusion), seek medical care immediately.
Yes, it is possible to get Dengue more than once. There are four different serotypes of the Dengue virus (DEN-1, DEN-2, DEN-3, and DEN-4). Infection with one serotype provides lifelong immunity to that specific serotype, but it does not protect against the other serotypes. In fact, subsequent infections with a different serotype can increase the risk of developing Dengue hemorrhagic fever or shock syndrome.
Yes, there is a vaccine called Dengvaxia (developed by Sanofi) that provides protection against all four serotypes of the Dengue virus. However, the vaccine is recommended only for people who have been previously infected with Dengue, as it may increase the risk of severe disease in those who have not been previously exposed.
Dengue is not transmitted directly from person to person. The virus is spread to humans only through the bite of an infected mosquito. However, an infected person can contribute to mosquito transmission by harboring the virus in their blood during the first week of illness, which is when mosquitoes bite and become infected.
For most people, Dengue fever lasts 2-7 days. The initial symptoms (fever, headache, joint pain) typically improve after a few days, but fatigue and weakness may persist for weeks. In severe cases (DHF or DSS), the illness can be prolonged, and recovery may take longer, requiring hospitalization and intensive care.
If you have Dengue, it’s recommended that you avoid traveling until you are fully recovered and no longer have a fever. Traveling while sick increases the risk of complications and also increases the chance of transmitting the virus to mosquitoes in other areas.