Travel Health Guide: France — Measles, West Nile Virus on the Mediterranean, Alsace Ticks, Summer Heat, and What Americans Underestimate

About 4.7 million Americans visit France each year, and most of them treat it as a no-prep destination. Passport, credit card, walking shoes, done. That worked in 2010. In 2026 it leaves a meaningful gap, because France in the last three summers has logged its first locally transmitted dengue cases in the Paris suburbs, a steady creep of West Nile virus up the Rhône valley, a stubborn global measles resurgence that has reached Paris and Lyon, and heat waves that have killed thousands of Europeans in a single week. France is not a tropical-disease destination, and you are not going to need malaria pills for a wine-country road trip. But "industrialized country" is no longer a free pass on travel health planning, and the routine vaccines, mosquito strategy, and pharmacy plan you bring with you matter more than they used to.

Most healthy American travelers to France do not need exotic vaccines or malaria prophylaxis. You do need to be current on routine immunizations, especially MMR, because measles continues to circulate in Europe and the CDC has an active Level 1 "Measles in the Globe" travel notice for all international travel. The CDC also recommends hepatitis A and hepatitis B for most travelers, a Tdap booster if you are due, and an annual influenza shot. Tick-borne encephalitis vaccination is worth a conversation if you are hiking, biking, or camping in Alsace, the Jura, eastern Burgundy, or the Auvergne. Rabies pre-exposure vaccination is generally reserved for long stays or itineraries with high animal contact. Once you land, the bigger day-to-day risks are mosquito-borne illness on the Mediterranean coast and Camargue in summer, heat illness in June through August, and the usual road-trauma and pickpocket risks of any major tourist destination. US travelers are not eligible for the European Health Insurance Card, so a private travel-medical insurance policy is essential. Pack DEET 30%, electrolytes, a basic GI and pain kit, your prescription medications with a copy of the prescription, and a printed proof of MMR immunity if you have one.

Quick Facts

• Region: Western Europe (EU, Schengen Area, eurozone)
• CDC Risk Level: Level 1 (Practice Usual Precautions) with active "Measles in the Globe" Level 1 Travel Health Notice
• Key Health Risks: Measles exposure, West Nile virus (southern coast and increasingly northern France), tick-borne encephalitis (eastern France), occasional autochthonous dengue and chikungunya, summer heat illness, road and scooter trauma, pickpocket-related stress in major tourist hubs
• Recommended Vaccines: MMR, hepatitis A, Tdap, polio, varicella, influenza; selective hepatitis B, tick-borne encephalitis, rabies
• Antimalarials Needed: No. France is malaria-free
• Yellow Fever Required: No, unless arriving from a country with risk of yellow fever transmission (then a certificate is required for travelers aged 1+ for French Guiana; metropolitan France does not require it)
• Tap Water: Safe to drink in cities and most rural areas. Avoid taps marked "eau non potable"
• Travel Insurance Recommended: Yes. US travelers are not covered by the EHIC and must pay out of pocket without private insurance

Why France Surprises American Travelers

France looks like a destination you can plan in an afternoon. For most travelers it still is, but the assumptions behind that plan have shifted. Three things have changed materially in the last decade.

First, mosquito-borne disease is no longer a southern-coast curiosity. Aedes albopictus, the tiger mosquito that transmits dengue and chikungunya, is now established in more than two-thirds of mainland France's departments. Santé publique France has been tracking small clusters of locally acquired dengue and chikungunya in Provence-Alpes-Côte d'Azur and Occitanie almost every summer, and in 2025 an autochthonous West Nile virus case was reported as far north as the Paris region for the first time in modern surveillance. The risk to an individual traveler is still low. The risk that you do not pack repellent because you are going to France, not Cambodia, is higher than it should be.

Second, the European summer is hotter and longer. The 2023 and 2024 heat domes drove ER visits across France for dehydration, syncope, and heat stroke, and they overwhelmingly hit travelers who were doing tourist things in the middle of the day: walking the Louvre courtyard at noon, climbing the Eiffel Tower at 3 p.m., touring an unair-conditioned Loire Valley château in July. Most Parisian hotels and many regional B&Bs still do not have central air conditioning, and what they call "climatisation" can mean a single underpowered unit in the lobby.

Third, the French healthcare system is excellent but it is not free for you. Americans often assume that European care will be cheaper, less paperwork, and somehow simpler. French public hospitals will absolutely treat you for an emergency, and the care is high quality. You will then be billed at the full non-resident rate, the bills can run into the thousands of euros, and Medicare does not travel with you. Without private travel insurance, you are paying out of pocket.

Vaccines for France in 2026

France is a Level 1 CDC destination. The recommended vaccine list is short, but several items on it deserve more attention than they usually get.

Measles, Mumps, Rubella (MMR)

This is the most important vaccine on the list for France. Measles never fully went away in Europe, and the WHO European Region has been reporting elevated case counts for several years. France has logged regional outbreaks tied to under-vaccinated communities, and Paris and Lyon are among the most-affected metro areas. The CDC's standing recommendation is that all international travelers be fully vaccinated against measles before departure, with two documented doses of MMR for anyone born in 1957 or later. If you are not sure whether you ever got the second dose, your options are a titer (blood test for measles antibodies) or simply a catch-up MMR shot. The vaccine is safe to repeat. If you were born before 1957 you are generally considered immune through natural infection, but talk to your physician if you are not sure.

If you have an infant aged 6 to 11 months traveling with you, the CDC recommends an early dose of MMR before international travel. That dose does not count toward the routine childhood schedule, so the child still needs their 12-month and 4-to-6-year doses afterward.

Hepatitis A

Recommended by the CDC for most travelers to France. The risk is low compared with North Africa or South Asia, but hepatitis A is a foodborne illness, and any country where you will eat in restaurants and street markets is a country where the vaccine makes sense. It is a two-dose series spaced six months apart, but a single dose gives you about 95% protection within two to four weeks, so even a last-minute dose is worth getting.

Hepatitis B

Recommended by the CDC for any traveler who might have a medical procedure, get a tattoo or piercing, have a new sexual partner, or be exposed to blood or body fluids. Many adults already have hepatitis B vaccination from childhood. If you are not sure, your physician can check titers or recommend the adult series. The newer two-dose Heplisav-B series can be completed in one month.

Tdap (Tetanus, Diphtheria, Pertussis)

Routine. If you are due for a Td or Tdap booster (every 10 years), get it before you leave. France is a country where you might cut yourself in a kitchen, scrape yourself on a Vespa, or step on something on a beach, and an up-to-date tetanus shot prevents a complicated post-injury workup abroad.

Polio

Routine childhood series usually covers you for life. A single adult polio booster is recommended for some travelers, particularly those going on to certain countries afterwards. For metropolitan France specifically, no booster is required for the destination itself.

Influenza

If you are traveling during flu season (broadly November through April in the Northern Hemisphere, though France's season runs a bit later than the US), an annual flu shot is recommended. Flu spreads enthusiastically on planes and in indoor restaurants, and a feverish week in a Paris apartment is a memorable way to lose half a vacation.

Varicella (Chickenpox)

If you have never had chickenpox and never been vaccinated, get the varicella series before traveling.

Tick-borne Encephalitis (TBE)

This is the most France-specific vaccine on the list, and it is the one most American travelers have never heard of. TBE is a viral infection transmitted by Ixodes ticks in forested parts of central and eastern Europe. In France, the highest-risk regions are Alsace, the Jura mountains, the Vosges, eastern Burgundy, and parts of the Auvergne. The TBE vaccine (TICOVAC) is now available in the United States, and is recommended by the CDC for travelers who will spend significant time hiking, biking, camping, or otherwise in wooded or grassy areas in TBE-endemic regions during the spring through fall tick season. It is a multi-dose series, so it needs to be started 4 to 8 weeks before travel for the accelerated schedule.

Most short urban trips to Paris, the Riviera, or Bordeaux do not need this vaccine. A weeklong cycling trip through Alsace in June absolutely warrants the conversation.

Rabies

Pre-exposure rabies vaccination is recommended for long-term travelers, travelers with high occupational or recreational animal contact, and adventure travelers who will be far from medical care. France itself is considered rabies-free in domestic animals, but rabies is still present in wildlife (bats in particular) and the EU's "PETS" border movement of animals from outside the EU keeps the surveillance map honest. If you are going to France for a week of museums, you do not need pre-exposure rabies. If you are going for three months of trail running in the Cévennes, talk to a travel medicine provider.

Get your travel vaccines for France through Wandr → Wandr schedules your travel vaccine appointment at a partner pharmacy near you so you can be ready without a separate doctor's visit.

Mosquito-Borne Illness on the Mediterranean Coast

This is the section that has changed the most since 2020.

West Nile Virus

West Nile virus is the most established arbovirus in France, transmitted by Culex mosquitoes most active at dawn and dusk. The traditional risk area is the Camargue wetlands in the Rhône delta, but in 2025 cases were reported across eight French departments including, for the first time on record, the Paris area. About 80% of infections are asymptomatic. Most symptomatic cases are a flu-like illness with fever, headache, body aches, and sometimes a rash. A small minority, about 1%, develops neuroinvasive disease with encephalitis or meningitis, which is the form that carries a mortality risk.

There is no vaccine for West Nile virus in humans. Prevention is mosquito avoidance. The most effective protection for adults is a repellent with 30% DEET, picaridin 20%, IR3535, or oil of lemon eucalyptus, applied to exposed skin during dawn and dusk hours. Long sleeves and pants help, and treating clothing with permethrin gives you a second layer that DEET does not.

Dengue and Chikungunya

Both are transmitted by Aedes albopictus, the daytime-biting tiger mosquito. Until about 2010 these were considered imported-only in France. Since then there has been a slow but real rise in autochthonous cases, almost all in the southern and southeastern departments, with occasional clusters as far north as the Paris suburbs in late summer. The risk in any one location and any one week is low. The risk over a whole summer in Provence is not zero. Practical prevention is the same as for West Nile, with extra attention during daylight hours since Aedes is a daytime biter.

If you develop a high fever, joint pain, and a rash within two weeks of returning from southern France, tell your physician where you were and that you may have been exposed to dengue or chikungunya. Both are reportable diseases and your physician will know how to test.

What to Pack for Mosquitoes

A 4-ounce bottle of 30% DEET, a few hundred milliliters of permethrin spray to treat one or two outfits, lightweight long sleeves for evening walks, and a small bottle of hydrocortisone or oral antihistamine for bite reactions.

Heat Illness in a French Summer

The 2003 European heat wave killed roughly 15,000 people in France, mostly elderly residents in apartments without air conditioning. The system in France has been redesigned since, but the underlying problem (an older housing stock that was not built for sustained 100°F afternoons) has not gone away. Summer 2022, 2023, and 2024 all delivered multi-week heat waves in France with daily highs above 95°F and overnight lows that never dropped below 75°F.

What this means for an American traveler:

• Most older hotels and apartments do not have meaningful air conditioning, even in Paris.
• Restaurants and museums vary widely; many have AC, but many of the best ones (smaller bistros, châteaux, basilicas) do not.
• The Métro can hit 95°F+ in heat waves.
• "Free water" culture is different. You will be given a glass of tap water if you ask politely, but the default is bottled water for purchase.

Plan the day so the most physical activities (walking tours, gardens, hill towns, hikes) are in the morning before 11 a.m. or after 5 p.m. Drink water continuously, not only when thirsty. Carry an electrolyte powder packet. If you start feeling dizzy, nauseated, or stop sweating, get into shade or AC, take off layers, and drink. If symptoms do not improve within 30 minutes or you have confusion, weakness, or vomiting, that is heat stroke and you need urgent medical care.

Tap Water, Food Safety, and Traveler's Diarrhea

Tap water in France is safe to drink almost everywhere. Paris, Lyon, Bordeaux, Marseille, Nice, and almost every other city and small town treat tap water to drinking-water standards. The exceptions are taps explicitly marked "eau non potable" (not drinkable), which you will see in train station bathrooms, some highway rest areas, on hiking trails, and in older fountains. If it is not marked, it is fine.

That said, traveler's diarrhea is not just about water. Most cases come from food handled imperfectly, and travelers eating restaurant meals three times a day for two weeks are statistically going to roll the dice on a bad oyster, undercooked steak tartare, or a buffet item left out too long. France is a low-risk country for traveler's diarrhea overall, but the CDC's general advice still applies: bring a basic GI kit, and consider asking your provider for a standby antibiotic prescription before you leave.

Wandr's clinicians can call in a standby azithromycin or ciprofloxacin prescription to your local pharmacy for pickup before your trip. Compare traveler's diarrhea antibiotics →

What to pack for GI: a small bottle of loperamide (Imodium), oral rehydration salts, your standby antibiotic if your physician prescribes one, and probiotics if you tolerate them.

How French Pharmacies Work

The green neon cross is a feature of every French town. A pharmacy in France is closer to a primary-care urgent care than the American convenience-store version. Pharmacists are trained to triage, recommend over-the-counter medications, and refer you to a physician when needed. You can walk in and describe a sore throat, a UTI, a rash, or motion sickness, and the pharmacist will tell you what they would take, sell it to you, and tell you when to escalate.

Three things to know:

• Most medications are behind the counter. This is different from the US, where ibuprofen and Benadryl are on open shelves. In France, you ask.
• Sunday is hard. Pharmacies rotate Sunday and holiday shifts. Look for the "pharmacie de garde" sign in the window of any closed pharmacy, which tells you which one is open.
• Bring a prescription, ideally in generic name. A French pharmacist will know "amoxicillin" but may not recognize a US brand name like Augmentin instantly. Your prescription bottle has both.

If you take regular prescription medications, bring enough for the whole trip plus a five-day buffer, in the original labeled bottle, with a copy of the prescription in generic name. If you run out, a French physician can usually rewrite for the equivalent local medication.

Healthcare and Insurance for US Travelers

France's healthcare system is one of the best-rated in the world, and the basics are easy to use. Walk into a public hospital emergency department and you will be seen. The catch is that without travel insurance, you are a private payer and you will pay the bill before you leave the country.

Three planning facts every US traveler should know:

1. Medicare does not cover you abroad. Most US private insurance plans either do not cover you abroad at all, or cover you with high out-of-pocket costs and a reimbursement model where you pay first and file later.
2. The European Health Insurance Card (EHIC) is not for you. EHIC eligibility is limited to residents of EU member states, Iceland, Liechtenstein, Norway, Switzerland, and the UK. Americans cannot apply.
3. Travel medical insurance is the practical answer. A typical two-week policy for a healthy traveler in their 30s runs $40 to $80 and covers emergency medical, evacuation, and trip interruption. For older travelers, travelers with pre-existing conditions, or anyone doing adventure activities (skiing in the Alps, scuba diving in Corsica, cycling the Tour de France routes), the price is higher and the value proposition is also higher.

See whether you need travel insurance for France →

Emergency Numbers in France

• 112 — European universal emergency number. Works from any phone, anywhere in the EU, in any language. This is the easiest one to remember and the safest default.
• 15 — SAMU (medical emergencies and ambulance dispatch)
• 17 — Police
• 18 — Fire (which in France also dispatches paramedics in many regions)

Save 112 in your phone before you leave. If you are calling from a US phone with international roaming, dial it directly with no country code.

Region-Specific Risks Inside France

Travel medicine for France gets more specific once you know where you are going.

Paris and Île-de-France

The big-city risk profile: pickpockets and tourist-scam stress, traffic and scooter accidents, occasional measles exposure, summer heat, and a small but real West Nile virus risk in outer suburbs.

Provence-Alpes-Côte d'Azur (Nice, Marseille, the Riviera)

Mediterranean mosquito risk is highest here. Pack repellent. Also: marine envenomations (weeverfish on Mediterranean beaches), boat and scooter accidents, and very high summer heat. Wildfires have become a real risk in late summer; check air quality if you have asthma.

Occitanie and the Camargue

Highest West Nile virus risk in France. Pack DEET. The Camargue is also flat, hot, and exposed; bring sun protection.

Alsace, the Jura, the Vosges, Eastern Burgundy, and Auvergne

Tick-borne encephalitis risk, mostly in spring through fall. If you are hiking, cycling, or camping for more than a couple of days in these regions, talk to a travel medicine provider about TBE vaccination. Always check yourself for ticks after a day outdoors and remove any you find with fine-tipped tweezers.

The French Alps

Altitude is only modest by Andes or Himalaya standards (Chamonix is at 3,400 feet, Mont Blanc summit is 15,777 feet), but acute mountain sickness happens at moderate elevation, especially with rapid ascents on cable cars. If you are summiting peaks above 8,000 feet, learn the symptoms of altitude sickness and consider a Diamox conversation with your physician.

Corsica and the South Atlantic Coast

Surf and tide hazards, sun exposure, marine stings. Standard beach-vacation health planning applies.

French Overseas Territories

This guide is metropolitan France. Guadeloupe, Martinique, French Guiana, Réunion, and Mayotte are different travel-medicine destinations with separate risk profiles, including yellow fever requirements for French Guiana and an active 2026 chikungunya outbreak in Mayotte. If you are going to any of these, treat the trip as a separate research project.

A France-Specific Travel Health Kit

For two weeks in metropolitan France, in addition to your usual toiletry kit, pack:

• Insect repellent: 30% DEET or 20% picaridin, 4 oz minimum
• Permethrin clothing spray (treat 1 to 2 outfits before you leave)
• Sunscreen SPF 30+, hat, sunglasses
• Oral rehydration salts (3 to 4 packets) and an electrolyte powder you like
• Loperamide (Imodium) and standby antibiotic if prescribed
• Acetaminophen and ibuprofen
• A small antihistamine (cetirizine or loratadine)
• Hydrocortisone 1% cream for bite reactions
• A few adhesive bandages, gauze, and a small roll of tape
• Hand sanitizer for travel days
• Any prescription medications, in original bottles, with a copy of the prescription in generic name
• A printout or photo of your insurance card and policy number
• A printout of your CDC International Certificate of Vaccination, if you have one, including MMR proof

See the full pre-trip health checklist →

Pre-Trip Checklist for France

• 4 to 8 weeks out: book a travel medicine consult and any vaccines you need
• 2 to 4 weeks out: refill prescriptions, buy travel insurance, request standby traveler's diarrhea antibiotic if appropriate
• 1 week out: pack the kit above, confirm electrolyte and repellent supply, save 112 in your phone
• Day of: carry medications in your carry-on, with prescriptions
• On the ground: drink water, wear repellent at dawn and dusk in the south, check yourself for ticks after wooded hikes, plan walking tours around the heat

When to See a Doctor After You Get Home

Most post-travel illness is not serious. The cases that matter are the ones that look like the flu but came from a place where flu-like illness can mean something different.

See a physician within a few days if any of the following happen within three weeks of returning from France:

• A fever above 101°F, especially if you spent time in southern France or had insect bites
• A spreading rash, joint swelling, or facial paralysis after a tick bite or hike in eastern France
• New, severe headache with confusion, neck stiffness, or photophobia
• Persistent diarrhea (more than five days), blood in the stool, or weight loss
• An unexplained rash or hives that does not respond to over-the-counter antihistamines

Tell your physician where you were and what you did. That single sentence is what changes a febrile-illness workup from generic to specific.

Frequently Asked Questions

Do I need any vaccines to enter France? No. France does not require any vaccines for entry from the United States. Yellow fever vaccination is only required if you are arriving from a country with risk of yellow fever transmission, and even then it applies primarily to French Guiana, not metropolitan France. That said, the CDC recommends being up to date on routine vaccines (especially MMR), hepatitis A, Tdap, and influenza.

Is the tap water safe to drink in France? Yes, almost everywhere. Tap water in cities and most rural areas is treated and meets drinking-water safety standards. The only exception is taps explicitly labeled "eau non potable" (not drinkable), typically in train station bathrooms, highway rest stops, and old fountains.

Do I need malaria pills for France? No. France is malaria-free. You do not need antimalarials for any region of metropolitan France.

Should I worry about West Nile virus in France? For most travelers, the absolute risk is low, but it is not zero, particularly in southern France and the Camargue in summer. There is no vaccine, so prevention is mosquito avoidance with DEET, picaridin, or another EPA-registered repellent. In 2025 a small number of cases were reported as far north as the Paris area, so a basic mosquito plan is reasonable anywhere in France in summer.

Do I need the tick-borne encephalitis vaccine for France? Only if you are spending significant time outdoors (hiking, biking, camping) in eastern France during tick season (roughly April through October). The highest-risk regions are Alsace, the Jura, the Vosges, eastern Burgundy, and the Auvergne. Short urban trips to Paris, the Riviera, or Bordeaux do not warrant this vaccine.

Is France considered safe for solo and family travel in 2026? Yes. France is rated CDC Level 1 (Practice Usual Precautions). The US State Department also lists France at standard advisory levels, with localized cautions for known issues (pickpockets in major tourist hubs, occasional protest activity, terrorism vigilance). Health-wise, the dominant risks are routine: heat, mosquitoes in summer, and road safety.

Do US travelers qualify for the European Health Insurance Card (EHIC)? No. The EHIC is only available to residents of EU member states, Iceland, Liechtenstein, Norway, Switzerland, and the UK. US travelers should buy a separate travel medical insurance policy before the trip.

What is the emergency number in France? 112 is the universal European emergency number and works from any phone, in any language. 15 dispatches medical and ambulance services, 17 is police, and 18 is fire (which also dispatches paramedics in many regions). Save 112 in your phone before you leave.

Will my US prescription work in a French pharmacy? A US prescription cannot be filled directly in France. You will need a French physician to rewrite the prescription if you run out. Bring enough medication for your whole trip plus a five-day buffer, in original labeled bottles, with a copy of the prescription in generic name to make rewriting straightforward.

Can I get travel vaccines and prescriptions through Wandr before my France trip? Yes. For vaccines like hepatitis A or TBE, Wandr books your appointment at a partner pharmacy near you and the pharmacist administers the vaccine on-site. For prescription medications (a standby traveler's diarrhea antibiotic, for example), Wandr's clinicians call the prescription in to your local pharmacy for pickup.

How Wandr Helps US Travelers Going to France

Wandr Health was built for exactly the kind of trip most Americans take to France: too short to justify a separate travel clinic visit, too significant to leave to luck. Our clinicians review your itinerary, your medical history, and the CDC and WHO guidance for your specific regions, then put together a vaccine plan and a prescription plan you can act on.

• For vaccines like hepatitis A, hepatitis B, MMR, Tdap, polio, influenza, or TBE, Wandr schedules your appointment at a partner pharmacy near you. The pharmacist administers your vaccine on-site, no separate doctor visit required.
• For prescription medications like a standby traveler's diarrhea antibiotic, our clinicians call the prescription in to your local pharmacy for pickup before you leave.
• For pre-trip checklists and destination-specific risk reviews, we walk you through what to pack, what to avoid, and what to do if something goes wrong on the ground.

Start your France travel health review with Wandr →

Sources

• Centers for Disease Control and Prevention. France — Traveler View. CDC Travelers' Health. https://wwwnc.cdc.gov/travel/destinations/traveler/none/france/
• Centers for Disease Control and Prevention. Measles in the Globe — Level 1 Travel Health Notice. https://wwwnc.cdc.gov/travel/notices/level1/measles-globe
• Centers for Disease Control and Prevention. Tick-borne Encephalitis Vaccine. https://www.cdc.gov/tick-borne-encephalitis/prevention/tick-borne-encephalitis-vaccine.html
• Centers for Disease Control and Prevention. Yellow Book 2026: Travel Vaccine Recommendations. https://www.cdc.gov/yellow-book/hcp/contents/index.html
• Santé publique France. West Nile Virus in Metropolitan France: 2025 Report. https://www.santepubliquefrance.fr/index.php/en/vector-borne-diseases/west-nile-virus/national-bulletin/west-nile-virus-metropolitan-france-2025-report
• European Centre for Disease Prevention and Control. Weekly Updates: Seasonal Surveillance in Humans for West Nile Virus, 2025. https://www.ecdc.europa.eu/en/west-nile-fever/surveillance-and-disease-data/disease-data-ecdc
• Emerging Infectious Diseases (CDC). Two Cases of Autochthonous West Nile Virus Encephalitis, Paris, France, 2025. https://wwwnc.cdc.gov/eid/article/31/11/25-1220_article
• US Department of State. France International Travel Advisory. https://travel.state.gov/en/international-travel/travel-advisories/france.html
• European Commission. European Health Insurance Card. https://employment-social-affairs.ec.europa.eu/policies-and-activities/moving-working-europe/eu-social-security-coordination/european-health-insurance-card_en
• World Health Organization. International Travel and Health: France country profile. https://www.who.int/travel-advice