Dengue Fever

SymptomsWhat is dengue fever?

Dengue fever is an infectious disease found in all tropical regions. It is transmitted by the bite of a daytime mosquito of the genus Aedes, infected with a dengue virus.

The fight against mosquitoes and personal protection (repellent, wearing protective clothing long and wide, etc.) are the best ways to reduce the risk of epidemics.


Symptoms are most often flu-like (fever, headache, body aches) and manifest within 3 to 14 days (4 to 7 days on average) following the bite by the mosquito. Dengue affects infants, young children and adults alike. Most often benign, although disabling, dengue can, however, be complicated by hemorrhagic forms.

Symptoms can include high fever (40°C), severe headache, retro-orbital pain, muscle and joint pain, nausea, vomiting, lymphadenopathy and skin rash.


There is no specific curative treatment. Treatment is primarily symptomatic, including pain and fever. Aspirin and nonsteroidal anti-inflammatory drugs are contraindicated due to the risk of bleeding.


  • Individual and collective protection

SprayThe fight against mosquitoes and personal protection (repellent, wearing long, loose clothing, etc.) are the best ways to reduce the risk of epidemics. People residing in areas likely to be affected by an endemic or an outbreak of dengue can contribute to reducing this risk by fighting against mosquitoes. In particular, by destroying or drying up potential nests, which constitute any reserve of stagnant water outside or inside the home.

  • Use repellents

Repellents are one of the safest measures to control the spread of dengue fever. These skin repellents are to be applied to all uncovered body parts during outdoor activities, especially in the morning and evening, when mosquitoes are most active.

The duration of protection varies from 4 to 8 hours. Specific products are reserved for children and pregnant women. Dengue Cheat SheetYour pharmacist can advise you on using repellents and personal protection measures.

  • Eliminating standing water from mosquito breeding grounds in the home

Mosquitoes lay eggs in small collections of standing water that become breeding sites (mosquito nests).

By removing all these places, we keep mosquitoes away from our home or our workplace.


  • See your doctor at the first sign of symptoms.

Dengue fever can be dangerous and can lead to hospitalisation and even death. If you have any symptoms, you should see your doctor quickly.