Mosquitoes and Health in Mauritius: What to Know (2026)

The most common health question in every Mauritius travel group is some version of this: are there mosquitoes, and do I need malaria tablets?

The answer surprises most people. There is no risk of malaria in Mauritius. No antimalarial medication is needed, and you will not be bitten by a malaria-carrying mosquito anywhere on the island. But mosquitoes are present, and they do carry other illnesses worth understanding before you pack. There is a risk of dengue in Mauritius, and as of 2025 and into 2026, there is also an active outbreak of chikungunya on the island. This guide gives you an honest, up-to-date picture of the health situation in Mauritius so you can prepare properly, pack the right things, and spend your trip enjoying the island rather than worrying about it.

 

The Honest Picture: Mosquitoes in Mauritius

Mosquitoes are present across Mauritius year-round. They are more common near vegetation, standing water, and in towns and urban areas than on open beaches. Travellers should avoid bites particularly during daytime hours.

The mosquito population is higher during the summer months (November to April) when heat and humidity create more breeding conditions, but mosquitoes are not absent in winter. The practical implication is simple: insect repellent is not optional in Mauritius. It belongs in your bag regardless of when you travel.

The good news is that there are no malarial mosquitoes in Mauritius. You do not need to take antimalarial tablets, which is a meaningful difference from many other tropical destinations. The health preparation for Mauritius is considerably simpler than it is for sub-Saharan Africa or parts of Southeast Asia.

 

Dengue Fever: What It Is and How To Avoid It

Dengue is a viral infection spread by mosquitoes which mainly feed during daytime hours. It causes a flu-like illness, which can occasionally develop into a more serious life-threatening illness, though severe dengue is rare in travellers.

The symptoms of dengue include a sudden high fever, severe headache, pain behind the eyes, joint and muscle pain, nausea, and a rash appearing a few days after the fever begins. Dengue fever is sometimes called breakbone fever because of the severe bone, joint, and muscular pains it causes. The vast majority of travellers who contract it recover fully within two weeks with rest and fluids.

There is currently no widely available vaccine for dengue for first-time travellers. Prevention through bite avoidance is the primary strategy.

How to protect yourself: Use a DEET-based repellent of at least 30 to 50 percent on all exposed skin, applied after sunscreen. Reapply after swimming or sweating. Wear light, long-sleeved clothing during early morning and late afternoon when mosquito activity is highest, particularly in forested and vegetated areas.

This is especially worth bearing in mind if your itinerary includes the island's greener corners — a Forest Therapy Walk or the Central Wilderness Hike & Wine Tour both take you through exactly the kind of shaded, vegetated terrain where daytime-biting mosquitoes are most active, so repellent should go on before you set off, not once you arrive.

Chikungunya: The Current Situation

! CDC Alert: There is ongoing outbreak of chikungunya in Mauritius in 2026. The CDC issued a formal health notice for Mauritius on 4 June 2026 and now recommends vaccination for travellers visiting the island. 

By 11 May 2026, health authorities confirmed 2, 816 cases since the start of the year, with transmission particularly concentrated in the lower and middle Plaines Wilhelms district, including Rose-Hill, Beau-Bassin and surrounding areas. By late May 2026, that figure had surpassed 3,300 confirmed cases.

The outbreak is driven by the Aedes albopictus mosquito and is part of a wider regional surge across the south-west Indian Ocean, following a major outbreak on the neighbouring island of Reunion in 2025.

Chikungunya is a mosquito-borne viral illness. Its symptoms are similar to dengue: sudden fever, severe joint pain, muscle pain, headache, and fatigue. The joint pain can be intense and in some cases persists for months after the initial illness. Like dengue, it is spread by daytime-biting mosquitoes.

Vaccination: The CDC now recommends vaccination against chikungunya for travellers visiting Mauritius. A chikungunya vaccine is licensed in a number of countries including the US and several European nations, though availability varies by region. Contact your GP or travel health clinic as soon as possible before departure, as vaccination is most effective when given at least two weeks before travel. Note that the vaccine is currently not recommended for adults over 65, people with a history of a severe allergic reaction to any component of the vaccine should not get vaccinated and pregnant women should discuss with a healthcare provider about the risks and benefits of the vaccine, compared to the risk of chikungunya illness. People with weakened immune systems might not get as much protection from vaccination. 

The practical response to both dengue and chikungunya is the same: consistent and thorough mosquito bite prevention. One good repellent routine reduces the risk of both simultaneously.

 

Vaccinations for Mauritius: What to Discuss With Your Doctor

No vaccinations are mandatory for entry to Mauritius unless you are arriving from a country with yellow fever risk. If you are travelling directly from the UK, Europe, Australia, or the US, this does not apply to you.

Discuss each of the following with your GP or a travel health clinic at least four to six weeks before departure.

Hepatitis A is recommended for all travellers. A single dose before travel gives protection for up to a year; a booster extends that to around 25 years.

Typhoid is recommended, particularly if you plan to eat at local restaurants, street food stalls, or markets. If your itinerary includes Port Louis Central Market and roadside snacks, vaccination is sensible.

Tetanus should be up to date regardless of destination. If you plan to hike, swim, or engage in any outdoor activities, having a current tetanus booster is standard practice.

Hepatitis B is recommended if you may have any exposure through medical procedures, tattoos, or sexual contact during your trip.

Chikungunya vaccine is now actively recommended by the CDC for travellers visiting Mauritius given the current outbreak. The vaccine is licensed in the US and several European countries. Ask your travel clinic whether it is available in your region. It is not currently recommended for adults over 65 while safety data is being reviewed.

Routine vaccinations including MMR (measles, mumps, rubella) should be up to date. Measles cases are rising in many countries worldwide and all international travellers should be fully vaccinated.

 

What to Pack for Health and Well-Being

•       DEET insect repellent (30 to 50 percent) — the single most important health item. Apply to all exposed skin during daytime hours and reapply after water or sweat.

•       Antihistamine tablets — for mosquito bites, skin reactions, or allergies.

•       Reef-safe SPF 50 sunscreen — applied generously and often. The UV index is extreme even on overcast days.

•       Personal prescription medication — in sufficient supply for your whole trip, plus a small surplus in case of delays.

•       Reef shoes or sandals — for walking on the seabed and in rocky lagoon areas.

•       Travel insurance covering medical treatment — treatment costs for overseas visitors can be significant. 

 

!Pro Tip: The most common mistake travellers make is applying repellent in the mornings and forgetting to apply during the day. Dengue and chikungunya mosquitoes are active throughout daylight hours. Set a reminder to reapply after lunch, after swimming, and any time. you have been sweating. 

 

Read our full What to Pack for Mauritius guide for a complete seasonal packing list.

If You Get Ill In Mauritius

Medical care in Mauritius is generally good, with both public hospitals and private clinics available across the island. The main private hospitals are C-Care, Clinique Darne and City Clinic and Clinique du Nord, all of which have international standards of care and English-speaking doctors.

For minor ailments, pharmacies are widely available in all main towns. Pharmacists are generally helpful and often speak English and French.

If you develop a fever, severe joint pain, or a rash during your trip or within two weeks of returning home, seek medical attention and tell your doctor you have been to Mauritius. Dengue and chikungunya are both diagnosable with a simple blood test.

Mauritius emergency number: 114 (ambulance services)

 

Frequently Asked Questions

Are mosquitoes a big problem in Mauritius?

In 2026, yes more than usual. There is an active and significant chikungunya outbreak with over 3,300 confirmed cases by late May 2026, and the CDC has issued a formal travel health notice for the island. Dengue also remains a risk year-round. Neither should stop you from visiting, but both make thorough and consistent insect repellent use essential rather than optional. Speak to your travel clinic about the chikungunya vaccine before you go.

What vaccinations do I need for Mauritius?

No vaccinations are mandatory unless you are arriving from a yellow fever risk country. Hepatitis A, typhoid, and the chikungunya vaccine are routinely recommended. Discuss your specific situation with a GP or travel health clinic at least four to six weeks before departure.

Is the tap water safe to drink in Mauritius?

Yes, tap water is treated and generally safe. Some visitors choose bottled water out of personal preference, particularly at the start of a trip. 

Is it safe to swim in the sea in Mauritius?

Yes. The lagoon is safe for swimming. Wear reef shoes in shallow rocky areas to avoid stonefish and sea urchins. 

What should I do if I feel unwell after returning home?

Tell your doctor you have recently been to Mauritius. Symptoms of dengue and chikungunya, including fever, joint pain, and rash, can appear up to two weeks after a mosquito bite. A blood test will confirm or rule out both.

 

Sources — Chikungunya Outbreak Data

Mauritius Ministry of Health and Wellness media updates, May 2026

CDC — Areas at Risk for Chikungunya, updated 4 June 2026:  https://cdc.gov/chikungunya/data-maps/index.html

CDC Travel Health Notice — Mauritius, May 2026:  wwwnc.cdc.gov/travel/destinations/traveler/none/mauritius

CDC Chikungunya Virus —Jan 2026:  https://www.cdc.gov/chikungunya/vaccines/index.html

Outbreak News Today — Chikungunya in Mauritius: 2,800 confirmed cases in 2026:  https://outbreaknewstoday.substack.com/

BEACON Biosurveillance — Chikungunya cases reach 735 in Mauritius, April 2026: https://beaconbio.org/en?

ECDC — Chikungunya virus disease worldwide overview, March 2026:  https://www.ecdc.europa.eu/en/chikungunya-monthly

 

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