The Centers for Disease Control and Prevention recommend that all travellers are up-to-date with their routine vaccinations including; measles, mumps, rubella, diphtheria, tetanus, pertussis (whooping cough), hepatitis B, polio, influenza and pneumococcal disease.
These vaccinations are given as part of the National Immunisation Program (NIP). For a full list please refer to the NIP schedule, available here. In some cases, you may need a booster or re-vaccination against a disease to ensure you still have immunity.
In addition, protection against hepatitis A and typhoid is advisable for most travellers to Thailand. Vaccinations for hepatitis B, Japanese encephalitis or rabies may also be recommended depending on your itinerary and planned activities. Malaria is present in some parts of Thailand, so see your doctor at least 4 weeks prior to your departure to ensure you’re adequately protected.