Upvote:1
According to Spain's Health Ministry (link in English but recommendations in Spanish :| Spain, you know...):
Now to the personal experience: I've been to Thailand without taking any additional vaccines beyond the ones I already took 20+ years ago. It was a (wonderful!) road trip: several places, rural villages, some street food, some wilderness, etc. We had zero problems regarding diseases.
However, we did have a medical problem, because the sun in Thailand is freaking strong -- even for a Spaniard used to 40 Celsius in summer. My wife got a heat stroke! So make sure you wear sunscreen at all times, a hat, and even a long-sleeved t-shirt wouldn't hurt either.
Upvote:4
CDC has pages on this for many countries. For Thailand, they recommend Hepatitis-A and Typhoid, in addition to the "routine ones" everybody should have.
And then, depending on where you go and what you do, they offer half a dozen others.
Upvote:6
Britons can look to the NHS's Fit for Travel website, which provides detailed health recommendations for most countries.
NHS recommended immunisations for Thailand include the following:
Confirm primary courses and boosters are up to date as recommended for life in Britain - including for example, vaccines required for occupational risk of exposure, lifestyle risks and underlying medical conditions.
Courses or boosters usually advised: Tetanus.
Other vaccines to consider: Cholera; Diphtheria; Hepatitis B; Japanese Encephalitis; Rabies; Typhoid.
Also see the guidance on the risks of malaria, dengue, and zika, among others.