Hi kawazuki, I am going to be getting the Tetanus, Typhoid and Twinrix (Hep A+B). The Tetanus I may not even be due as I would have had that about 5 years ago but it is one of the vaccines preferred for travel. The Twinrix (Hep A+B) requires 3 doses, they say 0,1 and 6 month intervals. As I will be travelling soon I can't wait the 6 months for the third dose, is it OK for a vaccine like Twinrix to have 3 injections in the space of 3 months like 0,1 and 2 month interval without an overdose effect. Also with the typhoid vaccine they give you 3 tablets to take but I have read that some people prefer a 4th tablet as it gives a more immune effect to the body, is there any cases of overdose from the typhoid vaccine?