Travel vaccines: what to check before you book

The excitement of booking a trip has a funny way of pushing the practical stuff to the bottom of the list. Flights sorted, accommodation booked, and then travel health becomes an afterthought squeezed in the week before you fly. That’s the one habit worth breaking, because when it comes to travel vaccines, timing is everything.

Some protection takes weeks to build. Book the appointment when you book the trip.

Here’s the bit that catches people out: a vaccine doesn’t switch on the moment it goes into your arm. Your immune system needs time to respond and build up protection, and for some travel vaccines that can mean several weeks, occasionally longer if a course involves more than one dose spaced apart. Turn up for a travel health consultation seven days before departure and there may simply not be enough runway left for certain vaccines to do their job properly, or for a multi-dose schedule to be completed at all. The fix is straightforward: as soon as you have dates and a destination, that’s the moment to start thinking about it, ideally four to six weeks out, and earlier still if you’re heading somewhere remote or for an extended stay. Leaving it to the week before a flight is the single most common reason someone has to travel with less protection than they’d like.

Not every trip needs the same level of attention. A city break in a well-served European destination is a very different proposition to a few weeks backpacking, volunteering, or working in parts of Africa, Asia, or South and Central America. Long stays, rural itineraries, visiting friends and relatives in a country you haven’t lived in for years, or trips involving altitude, safaris, or extended time outdoors are all good reasons to book a proper travel health consultation rather than relying on guesswork. Cruises with multiple ports of call and trips built around adventure activities are worth flagging too, since the itinerary itself can change what’s recommended. If you’re not sure whether your trip qualifies, that uncertainty is itself a reason to ask, rather than a reason to skip the conversation altogether.

It helps to understand there are really two different things being discussed in a travel consultation. First are your routine boosters, the ones most adults should be keeping up with regardless of travel, such as tetanus and diphtheria. A trip abroad is often the nudge people need to check whether these are up to date, since a lapsed booster is easy to overlook when there’s no obvious symptom prompting it. Second are the destination-specific vaccines, recommended because of where you’re actually going, how long you’re staying, and what you’ll be doing there. These are assessed individually rather than applied as a blanket rule, which is exactly why a proper consultation beats a quick search online.

Alongside the vaccine conversation, it’s worth using the same appointment to sort the rest of your trip prep. A basic travel medicine kit earns its keep more often than people expect: something for an upset stomach, rehydration sachets, pain relief, plasters and antiseptic, any regular allergy medication, and sun protection suited to where you’re headed. If you’re on regular prescription medication, work out exactly how many days you’ll be away and arrange enough supply to cover the whole trip comfortably, with a little buffer for delays, and check whether your medication needs any special documentation to travel with you. It’s a small bit of organising that saves a lot of stress once you’re away from home.

None of this needs to be complicated, and it works best as one conversation rather than a list of separate errands. Bring your itinerary, roughly how long you’ll be away, and a note of your current medications, and the rest can be worked out together. If you’re planning a trip and you’re not sure what applies to you, pop into the pharmacy before you book anything, that’s exactly the moment we can be most useful.