Malaria, chikungunya, Zika, dengue... Mosquitoes transmit serious, sometimes fatal diseases in many global regions. Before heading to an exotic destination, plan robust protection against these vectors and the pathogens they carry. Our experienced pharmacist addresses concerns from Lucie, a mother preparing for a family trip abroad.
Lucie plans to travel to Asia or South America with her husband and children. She's concerned about mosquitoes prevalent in these areas. Our pharmacist provides clear answers.
Lucie: What are the risks of mosquito bites on an exotic trip?
Pharmacist: Mosquitoes cause hundreds of thousands of deaths annually worldwide—far more than snakes (about 100,000) or sharks (around 10). They transmit infectious diseases that can be severe or fatal, including:
Anopheles mosquitoes
These transmit malaria, caused by Plasmodium parasites like Plasmodium falciparum, the most dangerous strain. Found in Africa, Southeast Asia, and South America, it affects liver and red blood cells, causing anemia, headaches, vomiting, weakness, fever cycles, and potentially fatal complications.
Aedes mosquitoes (e.g., tiger mosquito)
These carry:
Culex mosquitoes
Transmit West Nile fever from the West Nile virus, in East Africa, Mediterranean, Central Europe, and North America. About 20% of cases show symptoms like fever, pain, nausea, diarrhea, respiratory issues; neurological complications can be fatal in vulnerable people.
For more on vector-borne diseases, visit your Ministry of Health or WHO websites.
Lucie: Are there preventive measures like vaccines?
Pharmacist: Yes, vaccines and prophylactic treatments exist for some mosquito-borne infections. Consult a doctor well in advance for destination-specific recommendations.
Vaccinations
As of early 2019, only the yellow fever vaccine is available. It's internationally required for first trips to endemic areas; carry proof of vaccination. One dose provides lifelong protection.
Pharmacists can't administer it—visit authorized centers early.
No vaccines exist for the other diseases listed.
Chemoprophylaxis
Anti-malarial chemoprophylaxis is oral medication against the parasite. Resistance varies by region, so your doctor will prescribe the right one. Bring enough for your stay, starting the day before departure and continuing up to 3 weeks post-return for full efficacy.
Carry prescriptions for airports and emergencies. See our list of essential travel medicines.
Mosquito Activity Times
Lucie: Mosquitoes bite at night, right? Can we skip daytime protection?
Pharmacist: Anopheles (malaria) and Culex (West Nile) are mainly nocturnal, biting from sunset to sunrise, but they can strike daytime too. Aedes (Zika, dengue, chikungunya) are mostly diurnal. Protect yourself 24/7.
Mosquito Repellents
Lucie: How do we protect our family's skin effectively?
Pharmacist: Use proven synthetic repellents on exposed skin (face, neck, limbs). Key ingredients include:
Lasting 4-8 hours; reapply after bathing/sweating. Not all suit pregnancy—consult us. Safe for ticks, mites, flies, gnats too. Tailor to children's ages; breastfeeding moms, avoid breasts.
Natural options like essential oils aren't reliable for exotic trips.
Lucie: In sunny spots, how to combine with sunscreen?
Pharmacist: Apply sunscreen first, wait 20 minutes, then repellent. Read our guides on sun protection and skin prep/repair.
Clothing and Mosquito Nets
Lucie: Can we wear shorts with repellents?
Pharmacist: Repellents complement long, covering clothes. Impregnate fabrics with permethrin (not for skin).
Lucie: Nighttime protection?
Pharmacist: Use permethrin-impregnated mosquito nets over beds, cradles—even strollers daytime. Most effective barrier.
For insect protection details, check France's Public Health Weekly Epidemiological Bulletin (BEH).
Always research your destination's living and security conditions via France Diplomatie's 'Travel Advice' and country-specific pages.
