1

As far as I know you don't "need" anything, just recommendations so this is probably why it varies. Whether you chose to have them is personal preference. I like the MASTA website and they give a travel brief for free. I am covered for Hep A & B but also always covered for typhoid, tenanus, diptheria & meningitis as standard. (and had polio & MMR as a child which most people do). And the BCG. Like I say, some of these are standard vaccines for us in the UK anyway, not specific for travel. So you may have already had them depending on where you are from.

2

What #1 said. No needed, but good to have no matter where you travel.

3

I would have Hep .A. for that part of the world .Maybe ensure your tetanus is still valid .

4

Yeah Tetanus is one of those ones that often lapse as GP's (if from UK) don't really do boosters anymore. I manage to get mine for free as I like outdoor activities and doing stuff/in contact with wildlife/animals. Otherwise I wouldn't get it I doubt and have to pay a travel clinic.

5

I had heard that tetanus 10 year boosters were no longer required, but that's not backed up on google.
I don't have anything especially for Thailand, but I haven't been to Cambodia.
The important ones should already have been given to you. If not, you should get them wherever you are.

6

Yeah I think they said something like the more you have had in your life the less likely you need boosters as you are older and they tend to just vaccinate higher risk individuals for example vets. They do seem to stick to the 10 year protocol for those high risk people tho

7

I have Hep A and Hep B, plus the usual typhoid, tetanus and diptheria (and polio and MMR as a child).

I would definitely get Hep A as whilst the incidence is much less than it used to be it's much more prevalent here than in the West (I was shocked when I found out how many of my colleagues parent's have contracted it: almost 30%, compared to no-one I know in the West where it's not a routine vaccine) .

Hep-B you generally only need if you are in a high risk group and likely to come into contact with bodily fluids. In the West they generally only advise it if you work in the medical professions, or similar (which is the reason I had it there). It takes a course of injections spread over 6 months, IIRC, to get full immunity. Probably not worth it if you're only here for a holiday.