Vietnam Health and Vaccinations: How to Prepare Before You Go

Most trips to Vietnam pass without anything worse than a sunburn or a day of stomach trouble. Still, a little preparation changes the outcome when something does go wrong. This guide covers what is worth thinking about before you leave and while you travel: water, heat, food, traffic, mosquitoes, insurance, and where to find help.

It is general information for planning, not medical advice. Your own history, medication and itinerary matter more than anything written here, so the one firm recommendation is to talk to a doctor or a travel clinic before you go.

Start with a conversation, not a checklist

Travel health advice changes. Official recommendations are revised, outbreaks come and go, and the right choices for a healthy 25-year-old on a two-week backpacking route differ from those for a family with young children or a traveller with a chronic condition.

For that reason this page does not list vaccines or give a schedule. Instead:

• Book a consultation early. A doctor or travel clinic can go through your vaccination record, your medication and your route. Doing this several weeks before departure leaves time for anything that needs more than one visit. Your doctor will tell you what applies in your case.
• Check official advice from your own country. Health ministries and national travel health services publish destination pages and update them. Read the current version, not a forum post from three years ago.
• Bring your records. Keep your vaccination record and a list of regular medication, with generic names, in your hand luggage.
• Say where you are going. Mention the whole itinerary, including remote areas such as the northern mountains, caves in Phong Nha, or islands, because the answer can differ from a city-only trip.

If you take prescription medication, carry it in its original packaging with a copy of the prescription, and check your insurer’s and the airline’s rules on quantities. Do not assume you can replace a specialised drug locally.

Water: not from the tap, anywhere

The simplest rule in Vietnam is also the most important: tap water is not drinkable anywhere in the country. This applies in Hanoi and Ho Chi Minh City as much as in a village homestay.

What that means in daily life:

• Drink bottled or filtered water. Sealed bottles cost very little, and many hotels, hostels and homestays provide large refillable containers or filters.
• Use bottled or filtered water to brush your teeth if you want to be careful; plenty of visitors do.
• Check that the cap seal is intact when you buy a bottle from a street stall.
• Refilling a reusable bottle from a filter or a large dispenser cuts plastic waste. Ask your accommodation before you fill up.
• Be a little cautious with ice, salads washed in tap water and unpeeled raw fruit if your stomach is sensitive. In busy restaurants that cater to visitors, ice is usually commercially made, but you are the best judge of your own digestion.

For a longer answer to a very common question, see our short piece on whether you can drink tap water in Vietnam.

Heat and humidity: plan around them

Vietnam is long and its climate varies, so the heat problem arrives at different times of year depending on where you are:

• In the north, summer from roughly May to September is hot, very humid and rainy. A day in Hanoi’s Old Quarter or on the steps of a citadel in July can be exhausting.
• In the south, around Ho Chi Minh City and the Mekong Delta, temperatures sit at 25–35 °C all year, and the hottest months are roughly March and April, in the dry season. During the wet season, from roughly May to November, humidity stays high and rain usually arrives in short late-afternoon downpours.
• In the centre, the hot, mostly dry period runs from roughly February to August, which is when beach days in Da Nang and Hoi An are most appealing and the sun is strongest.
• In Da Lat, altitude keeps it cool all year, so nights can feel chilly and a light jacket is useful.

There is no single best season for the whole country; our guide to the best time to visit Vietnam explains how to match region and month.

Practical habits that work

• Start early, rest at midday. Temples, citadels and walking tours are far more pleasant at eight in the morning than at one in the afternoon. Many local people rest in the middle of the day too.
• Drink before you are thirsty. In humid heat you can lose a lot of fluid without noticing. Pale urine is a simple signal that you are doing well.
• Protect your skin. Sunscreen, a hat and sunglasses matter even on cloudy days, especially on water, where reflection adds to exposure. A cruise or boat day means hours on deck.
• Wear breathable clothes. Light cotton or linen is more comfortable than synthetic fabrics. For temples you also need covered shoulders and knees, so lightweight long sleeves serve both purposes.
• Know the signs of heat illness. Dizziness, headache, nausea, confusion, or cramps mean stop, find shade or air conditioning, drink, and seek help if you do not recover quickly.
• Build in air-conditioned breaks. A museum, a café or a hotel room for an hour makes the rest of the day easier.

Our packing list for Vietnam covers what to bring for each type of weather, so we leave the suitcase there.

Food: eat well, use judgement

Food is one of the best reasons to visit, and most travellers eat street food every day without trouble. A few habits lower the odds of an upset stomach:

• Choose busy places. A stall with a queue of locals has a high turnover, so ingredients do not sit around.
• Prefer food cooked in front of you and served hot over dishes that have been sitting out.
• Wash or sanitise your hands before eating. A small bottle of hand gel goes a long way when a tap and soap are not nearby.
• Introduce new things gradually. On your first days, a very spicy or heavily fermented dish can be hard on a stomach that is adjusting to a new diet and a new climate.
• Tell restaurants about allergies clearly. Fish sauce, shrimp paste, peanuts and shellfish appear in many dishes, and a translated allergy card helps. English is common in tourist restaurants, much less so in small local places.

If you want to ease in with a guide, a guided street food tour in Hanoi is one way to learn what to order and how to read a busy stall, though this is a convenience rather than a necessity. A cooking class is another, such as an authentic Vietnamese cooking tour from Hoi An, where you see how ingredients are washed and handled.

For more, read our street food safety guide and the overview of Vietnamese food.

Traffic: the main injury risk

If there is one section of this guide to read twice, it is this one. Traffic is the first source of injuries among visitors. Roads are dense and dominated by motorbikes, traffic drives on the right, and the flow is informal but fast.

As a pedestrian

• Cross at a steady, predictable pace and do not stop or run. Riders steer around you because they can anticipate your path.
• Be careful on pavements, which are often used for parking, stalls and sometimes motorbikes.
• Look both ways even on one-way streets.
• Our short piece on how to cross the street in Vietnam explains the technique.

If you ride a motorbike

• Licence. Riding without the correct licence is a real risk, and many insurers refuse a claim in that case. Check what licence you need and whether your insurer accepts it, before you rent anything.
• Helmet. Wear a proper helmet that fits and is fastened, not a thin decorative one.
• Experience. A crowded city or a mountain pass is not the place to learn. Many visitors ride pillion with a local rider on the Ha Giang loop for exactly this reason.
• Weather and road. Rain makes surfaces slippery and visibility poor, and mountain roads have sudden bends, livestock and landslides in the wet season.
• Rent from a reputable operator, and inspect the brakes, tyres and lights.

Our guide to renting a motorbike in Vietnam goes into licences and rental practice in detail. If you would rather not ride, Grab and taxis are easy in cities.

Mosquitoes: general protection

Mosquitoes are present in many parts of Vietnam, particularly in humid and wet conditions, and more so around standing water and in rural or forested areas. The general advice is simple and applies everywhere:

• Use an insect repellent on exposed skin, especially at dawn and dusk.
• Wear light, loose long sleeves and trousers in the evening.
• Choose accommodation with screens, air conditioning or a fan, and a net if offered.
• Avoid leaving doors open at night.

Whether further measures make sense for your route is a question for your doctor or travel clinic, and this page deliberately says nothing beyond these basics.

Sun, sea and water activities

Many of the most popular trips involve water: junk-boat cruises in Ha Long and Lan Ha Bay, the Mekong Delta by boat, snorkelling off Nha Trang and Phu Quoc, basket boats at Hoi An. A few reminders:

• Cover up and reapply. Sunscreen washes off in the sea, so reapply it. Reef-safe products are kinder to corals.
• Respect the current and the flag colours at beaches, particularly in the rainy season on the central coast, when the sea can be rough.
• Choose operators with life jackets and follow the crew’s instructions. If a cruise is cancelled due to weather, accept it; typhoon season in the north runs roughly from July to September, and our rainy season and typhoons guide explains the pattern.
• Mind your stomach and ears after swimming in busy waterways. Showering with clean water afterwards is a good habit.

An overnight cruise in Lan Ha Bay from Hanoi or a snorkelling day around Phu Quoc’s islands is the kind of trip where sun cover and water make the difference between a great day and a rough evening.

Altitude, cool weather and the mountains

Vietnam is not a high-altitude destination in the Himalayan sense, but the northern mountains can be cold and damp in winter. Sapa sits below Fansipan, at 3,147 m the country’s highest peak, and winter temperatures can drop close to freezing there. Trekkers should bring layers and waterproofs and check conditions. Da Lat, at roughly 1,500 m, stays cool all year.

Remote areas also mean longer journeys to care. If you are heading to Sapa, Ha Giang, Cao Bang or the caves of Phong Nha, tell someone your plan, keep a small first-aid kit, and ask your insurer how evacuation works from rural areas. A guided trek such as a two-day trek through the rice terraces near Sapa gives you local knowledge of paths and weather.

Air, noise and crowded cities

Big cities in Vietnam are busy, loud and often smoggy with traffic fumes. Most visitors cope well, but if you have asthma or another respiratory condition, mention it to your doctor and keep your inhaler to hand. Earplugs help in the Old Quarter. For a calmer interlude, countryside bases such as Ninh Binh are an easy break from the capital; you can see Trang An and Tam Coc in a day, for instance on a small-group trip such as the Ninh Binh day trip from Hanoi.

Insurance: the part people skip

Travel insurance is not a formality in Vietnam. A good policy covers hospital care, emergency transport and repatriation, and it covers the activities you actually plan to do.

Check these points before buying:

1. Motorbikes. Does the policy cover riding, and under what conditions? Many require a valid licence for the specific category of vehicle and a helmet. If the policy excludes it, you are uninsured at the moment you are most at risk.
2. Adventure activities. Trekking, caving, canyoning, kayaking and diving may be excluded or need an add-on.
3. Medical evacuation. This matters most in remote areas and on islands, where the nearest good hospital may be a flight away.
4. Pre-existing conditions. Declare them and read the exclusions.
5. How claims work. Many hospitals ask for payment or a guarantee at the time of treatment. Know the insurer’s 24-hour assistance number and keep it with your documents.
6. Cancellation cover. Storms and typhoons can disrupt cruises and flights, and some policies cover this.

Keep digital and paper copies of your policy number and the assistance phone number. Our travel insurance guide goes deeper, and the guide to staying safe covers theft and scams, which this page leaves alone.

If you get ill or hurt

Emergency numbers

Service	Number
Police	113
Fire	114
Ambulance	115

Save these on your phone. In practice, your hotel or homestay will often be the fastest route to help, particularly for non-urgent care, because staff know the nearest clinic and can speak to the driver or the doctor.

Where to go

• Cities and main tourist destinations. Hanoi, Ho Chi Minh City, Da Nang and other large cities have hospitals and clinics, including private ones that treat visitors and may have English-speaking staff. Ask your insurer’s assistance line for a recommended facility.
• Pharmacies. They are common and sell many products over the counter. For anything beyond simple remedies, ask a pharmacist for the generic name and check against your own medicines to avoid doubling a dose.
• Remote areas. Expect simple local clinics and long transfers. This is when your insurance assistance line matters.

Practical tips

• Keep the address of your accommodation in Vietnamese on your phone or on a card.
• Carry a small first-aid kit: plasters, antiseptic wipes, rehydration salts, pain relief, any personal medication, and something for upset stomach as your doctor recommends.
• Keep receipts and reports from any treatment for your insurer.
• Do not ignore a fever or a persistent illness after you get home. Tell your doctor where you have been.

Special situations

• Children. Heat, water and traffic matter even more. Talk to a paediatrician before you travel, bring child-size medication in the right form, and prefer shorter days with rest. Our guide to Vietnam with kids covers practicalities.
• Older travellers. Pace the itinerary, pick hotels with lifts and air conditioning, and check your medication and insurance cover. Our guide for seniors has more.
• Pregnancy. Discuss any trip with your doctor first, since advice depends on the stage of pregnancy and your own circumstances.
• Chronic conditions. Bring enough medication for the trip plus a margin for delays, and a doctor’s letter if needed.
• Mobility needs. Pavements and old buildings can be uneven. Our accessible travel guide covers this.

A simple pre-departure checklist

1. Book a doctor or travel clinic appointment well ahead of departure.
2. Check your government’s official travel health advice for Vietnam.
3. Buy insurance that covers your real activities, including motorbikes if you ride.
4. Pack medication in original packaging with a prescription copy.
5. Bring repellent, sunscreen, rehydration salts and a small first-aid kit.
6. Save 113, 114 and 115, plus your insurer’s assistance number.
7. Plan a gentle first day to adjust to heat and time zone; Vietnam is on UTC+7 all year.
8. Use bottled or filtered water from the moment you land.

If you are still building your trip, our first-time visitor guide and the budget guide are good next steps.

Frequently asked questions about health in Vietnam

Is tap water safe to drink in Vietnam?

No. Tap water is not drinkable anywhere in the country. Hotels provide bottled or filtered water, and the same water is used for brushing teeth by most visitors. Refill stations and large sealed bottles are easy to find in every city.

Which vaccinations do I need for Vietnam?

This guide gives no list on purpose, because recommendations depend on your age, health history and itinerary, and they change over time. Book a consultation with your doctor or a travel clinic several weeks before departure and check your government’s official travel health advice.

Do I need to worry about mosquitoes?

Take ordinary precautions: use repellent, wear light long sleeves in the evening, and choose rooms with screens, a fan or air conditioning. For anything beyond these general measures, ask your doctor or travel clinic what applies to your route.

What is the biggest health risk for visitors?

Traffic. Motorbike crashes injure many visitors, whether they ride themselves or are hit as pedestrians. Heat and dehydration come next, followed by stomach upsets from unfamiliar food or water.

Does my travel insurance cover riding a motorbike?

Not always. Many policies exclude motorbike accidents, or refuse a claim if you ride without the correct licence. Read the policy wording before you leave and confirm in writing that your planned riding is covered.

What number do I call in a medical emergency in Vietnam?

Dial 115 for an ambulance, 113 for the police and 114 for the fire service. In practice, a hotel or hostel reception, or a Vietnamese speaker nearby, can often get help faster, so keep the address of your accommodation written in Vietnamese.

Can I find pharmacies and doctors easily?

In Hanoi, Ho Chi Minh City, Da Nang, Hoi An and other main destinations, pharmacies and clinics are plentiful and some staff speak English. In remote mountain areas, on islands and on the Ha Giang loop, care is far away, which is why insurance with evacuation matters.