Vaccinations for Vietnam: what is routinely advised and what depends on your trip

Travel vaccination advice has a habit of arriving as a long list with no sense of proportion. That leaves people either having everything or having nothing. The honest shape of it for Vietnam is narrower. A handful of ordinary vaccinations that most adults are overdue for anyway, two that are advised for essentially every traveller, and then a small set that genuinely depends on where you are going, for how long, and what you will be doing.

This page explains that shape so the conversation with a travel clinic is a short one. What it deliberately does not do is print a schedule. Which doses, in what order, and how they space out depends on your age, your records and your dates. A timetable written for nobody in particular is the wrong way to plan an injection. That decision belongs with a clinician who can see your history.

Vaccination prevents; it does not treat

Nothing on this page helps with an illness that has already started. Two situations after arrival need care straight away, rather than a vaccination appointment. Ring 115 or go to the nearest hospital emergency department for:

• A bite, scratch or lick on broken skin from a dog, cat, monkey or bat — rabies treatment after exposure is time-critical and is started at a hospital or an approved vaccination centre, not left until the following week
• A deep or dirty wound, a puncture from something rusty, or a wound contaminated with soil or animal faeces, where tetanus cover needs checking the same day
• Fever with a severe headache, a stiff neck, dislike of light, or a rash that does not fade when pressed
• Breathing difficulty, swelling of the lips or tongue, or a spreading rash in the minutes to hours after any injection
• A fever above forty degrees, a seizure, or unusual drowsiness in a child after a vaccination

Ordinary reactions are different and expected: a sore arm, mild fever, tiredness and aching for a day or two. Those do not need anything beyond simple painkillers at the dose on the packet. They are not a reason to skip a later dose in a course.

The routine ones travellers forget

Before anything exotic, the vaccinations that prevent the most harm in travellers are the ones they already should have had. A travel consultation is a good moment to catch up.

• Tetanus — the commonest gap by a wide margin. Motorbike grazes, reef cuts, dog bites and garden injuries all raise the question, and arriving with cover in date saves a hospital trip here
• Measles, mumps and rubella — measles still circulates in Southeast Asia and outbreaks reach travellers. Two documented doses, or evidence of immunity, is the thing to confirm
• Seasonal influenza, which spreads on aircraft and in air-conditioned coaches far more efficiently than most people assume, and which circulates year-round in the tropics rather than in a winter season
• Hepatitis B, which is relevant for longer stays, for anyone who may need medical or dental treatment here, and for new sexual partners

The two that apply to almost everyone

Hepatitis A and typhoid both come in through food and water. The exposure in Vietnam is through perfectly normal eating, not through anything reckless. They are advised for the great majority of travellers, including people staying in good hotels.

Hepatitis A vaccination is strongly protective and lasts for years once the course is finished. Typhoid vaccination is useful but less complete. It reduces the risk substantially and does not remove it, so food and water sense still matters after one. Both are covered in more depth in our guide to those two illnesses.

Japanese encephalitis: where it genuinely applies

This is the vaccination that generates the most confusion. The risk is real but narrow. The virus is carried by mosquitoes that breed in rice paddies and around pig farming, so transmission is rural and agricultural rather than urban, and it rises in the rainy season. A fortnight in Hanoi, Hoi An and Ho Chi Minh City is a different exposure from a month on a motorbike through the northern highlands in July, or a season working on a farm in the Mekong Delta.

Vietnam does have Japanese encephalitis, including in the north, and the illness is serious in the small proportion of infections that reach the brain. The vaccination is accordingly advised for longer rural stays, repeated visits, the wet season in agricultural areas, and anyone living here — and is often not advised for a short urban holiday. That is precisely the judgement a travel clinic exists to make. It is why the answer differs between two travellers going to the same country.

Rabies before exposure, and why it changes the aftermath

Rabies is present in Vietnam, and dogs are the main source. The macaques around temples and tourist viewpoints are a genuine second one. Being vaccinated beforehand does not remove the need for treatment after a bite, which is the point people get wrong.

What it does change is what that treatment looks like. An unvaccinated person who is bitten needs rabies immunoglobulin as well as a course of vaccine. Immunoglobulin is the component that is expensive, in limited supply, and not stocked everywhere. That can mean travelling to a city to get it, from an island or a highland town, in a hurry. Someone vaccinated in advance needs a shorter vaccine course and no immunoglobulin.

So pre-exposure vaccination is weighed on access, not on how likely a bite is. Cyclists and motorcyclists, runners, people working with animals, long stays, remote itineraries, and families with small children, who are both bitten more often and less likely to report it.

What Vietnam does not require

Trimming the list is as useful as adding to it.

There is no yellow fever requirement for entry to Vietnam from most of the world. A certificate can be requested if you are arriving from a country with transmission — a routing question rather than a Vietnam question. Cholera vaccination is rarely advised for ordinary travellers. And antimalarial tablets are not routinely recommended for the standard tourist route. The cities, the coastal resorts, the Red River and Mekong deltas are considered without malaria risk, with residual transmission confined to specific forested and border areas. That is a real change from what older guidebooks say. Check it against current advice for your own itinerary rather than assuming either way.

The dengue vaccines are a more nuanced case. Availability, the age ranges they are approved for, and whether previous dengue infection matters all vary by country and by product. It is a question to put to a travel clinic with your own history in front of them, not one to settle from a web page.

Already here and unvaccinated

Plenty of people realise halfway through a long stay that they never got round to it. Starting late is usually still worthwhile. Particularly for hepatitis A, hepatitis B and rabies, and particularly if you are staying months rather than days.

Vietnam has a well-developed vaccination sector. The large private networks and the provincial preventive health centres both run vaccination services, stock the common travel vaccines, hold them properly and issue records, and the cities are straightforward to arrange. Three things to confirm when you go. That the vaccine is stored in a monitored cold chain, that you receive a written record with the product name, batch and date, and that the clinic can tell you when the next dose in a course is due so it can be finished here or at home.

Bring whatever vaccination history you have, even a photograph of a record book. Repeating a course unnecessarily is a waste, and a record is what prevents it.

Children, pregnancy and older travellers

Children travelling here are the group where this matters most. Their routine schedule may not be finished, and the illnesses that vaccination prevents are harder on them. Some vaccinations can be brought forward before travel, and some have minimum ages. Both are decisions for a paediatric travel consultation rather than for a list.

What a consultation here covers

• Reviewing the records you actually have and identifying the real gaps, which is usually tetanus and measles rather than anything tropical
• Matching advice to your itinerary — rural against urban, wet season against dry, weeks against months
• Arranging vaccination at a reputable centre with a documented cold chain, and explaining what to expect afterwards
• Checking tetanus cover at the time of a wound, which is the commonest vaccination question we are asked in practice
• Sending you to a hospital or approved centre immediately after an animal bite, rather than handling it at your accommodation
• An itemised invoice and a report in English, since some policies reimburse travel vaccination and most ask for documentation after a bite

The practical summary

Get tetanus and measles cover confirmed, plan on hepatitis A and typhoid, and have a proper conversation about Japanese encephalitis and rabies based on where you are actually going. Leave the schedule to the clinician. And remember that no vaccination replaces washing a bite and getting to a hospital the same day.