Do you need vaccinations to travel?

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 6 min read

Most international travel needs no special vaccinations at all — being up to date on routine jabs is usually enough. But a handful of countries legally require proof of a specific vaccination before they'll let you in, and a wider list of destinations carry a strong medical recommendation even where nothing is mandatory. The two categories are easy to confuse, and mixing them up is the main way travellers get caught out.

The three categories of travel vaccination

It helps to think of travel vaccinations in three tiers, each with a different level of urgency:

• Routine vaccinations — the ones on your home country's standard childhood and adult schedule (MMR, tetanus/diphtheria, polio, and so on). Being up to date on these matters for any trip, since diseases largely eliminated at home can still circulate elsewhere.
• Recommended vaccinations — not legally required for entry, but advised for the specific destination and activities, based on real disease risk. Hepatitis A, typhoid and rabies pre-exposure vaccination fall into this group for many destinations.
• Required vaccinations — a small number of countries make a specific vaccination, above all yellow fever, a legal condition of entry, sometimes only if you're arriving from another country where the disease is present.

Yellow fever: the one that's actually mandatory

Yellow fever is the clearest example of a legally enforced travel vaccination. A number of countries, mostly across parts of Africa and South America, require proof of vaccination — an International Certificate of Vaccination, sometimes called a "yellow card" — either from all arriving travellers or specifically from those arriving from a country where yellow fever is present.

The vaccination itself needs to be given at least 10 days before travel to be valid for certificate purposes, and it's only available at designated yellow fever vaccination centres in most countries — not every GP or pharmacy can administer or certify it. Book well in advance of your trip, ideally four to six weeks out, both to allow the 10-day validity window and because appointments at these centres can be limited.

Commonly recommended vaccinations

Beyond yellow fever, a cluster of vaccinations come up repeatedly in travel health advice for destinations across Asia, Africa, Central and South America, and parts of the Middle East:

• Hepatitis A — spread through contaminated food and water, relevant almost anywhere outside high-income countries with reliable sanitation.
• Typhoid — similarly food- and water-borne, commonly recommended for South Asia in particular.
• Rabies — a pre-exposure course is recommended for travellers heading to remote areas, doing extended trips, or working with animals, in countries where the disease is present, since post-bite treatment can be hard to access quickly in rural areas.
• Japanese encephalitis — recommended for longer stays in rural parts of Asia during transmission season.
• Malaria prevention — not a vaccination in the traditional sense for most travellers (an anti-malarial course of tablets is usually used instead, alongside bite prevention), but it's assessed alongside vaccinations in a travel health consultation and matters for large parts of sub-Saharan Africa, South Asia and parts of South America.

Which of these actually apply depends heavily on the specific country, region within it, season, trip length and planned activities — a week in a capital city's business district carries a very different risk profile from a month trekking rurally, even within the same country.

Where to check what you need

The most reliable starting points are your own country's official travel health service (in the UK, for example, NHS travel health advice or a dedicated travel clinic) and the World Health Organization's international travel and health guidance, which tracks both routine recommendations and any current outbreak-driven advice for specific countries. Many countries' immigration or foreign ministry websites also state entry vaccination requirements directly — useful for confirming a yellow fever or similar mandatory requirement rather than relying on a health source alone.

Timing matters

Several travel vaccinations need more than one dose, spaced weeks apart, or need time to become fully effective after the final dose. Leaving it until the week before you fly can mean either missing a required jab's validity window entirely or travelling without full protection from a recommended one. A travel health appointment 6–8 weeks before departure gives enough room for most courses; for last-minute trips, some vaccines and antimalarials can still be arranged quickly, but options and effectiveness may be more limited.

Practical tips

• Keep any vaccination certificate, especially a yellow fever certificate, with your passport rather than packed away — it may be checked at the point of entry, not just before you fly.
• If you have a chronic condition, are pregnant, or are travelling with young children, get destination-specific advice rather than generic guidance, since some vaccines and antimalarials are unsuitable in these situations.
• Budget for the cost — some travel vaccinations are available free through public healthcare systems, but many, particularly less common ones, are only available privately at a cost.
• If your trip includes multiple countries, check requirements for each one individually, plus any that apply because of transit through a third country.

Frequently asked questions

Is yellow fever vaccination compulsory for all international travel?

No — only for entry to specific countries, mostly in Africa and South America, and sometimes only if arriving from another country where the disease is present. Most travel doesn't require it at all, but where it applies, it's strictly enforced.

How far in advance should I get travel vaccinations?

Ideally 4–8 weeks before departure, since some vaccines require multiple doses spaced apart, and the yellow fever certificate only becomes valid 10 days after vaccination. Last-minute options exist but are more limited.

Do I need any vaccinations to travel within Europe?

Generally no beyond being up to date on routine vaccinations, though this can vary with specific circumstances or current outbreaks — check official advice rather than assuming, especially for longer or rural trips.

Where can I get an official yellow fever certificate?

Only at designated yellow fever vaccination centres, not every general practice or pharmacy. Your national travel health service can point you to the nearest registered centre.