Dengue Fever risk in Medellín

Dengue Fever Prevention Guide for Medellín Dengue fever is a viral infection transmitted by Aedes aegypti mosquitoes. Symptoms include high fever, severe headache, joint and muscle pain, rash, and in serious cases, hemorrhagic complications. There is no specific antiviral treatment, so prevention is critical. Medellín's risk score of 68/100 reflects several local factors. The city's tropical climate, with temperatures between 20-28°C and regular rainfall, creates ideal breeding conditions for mosquitoes. Rapid urbanization, informal settlements with limited water infrastructure, and standing water stored in open containers all increase exposure risk. The Aburrá Valley's geography traps humidity, and dengue-carrying mosquitoes bite primarily during early morning and late afternoon hours. Practical Prevention Steps 1. Eliminate standing water weekly. Empty, scrub, and cover water storage containers, flower pots, tires, and any item that collects rainwater. The Aedes mosquito breeds in clean, stagnant water, not dirty water. 2. Use EPA-registered insect repellent containing DEET, picaridin, or oil of lemon eucalyptus. Reapply every few hours, especially if sweating or near water. 3. Wear long sleeves and long pants during peak biting hours, roughly 6-9 AM and 3-6 PM. Light-colored clothing is less attractive to mosquitoes. 4. Install or repair window and screen doors and use air conditioning when possible. Use bed nets if sleeping in unscreened rooms, especially in older housing common in neighborhoods like Laureles, Envigado, or lower-altitude areas of the valley. 5. Report potential breeding sites to local health authorities. Medellín's Secretaría de Salud conducts fumigation campaigns, and community reporting strengthens these efforts. Contact 123 for emergency symptoms including persistent vomiting, abdominal pain, or bleeding. If you develop high fever within two weeks of being in Medellín, seek care at a local clinic. Hydration remains the primary treatment while your body fights the virus.