Research the areas of Thailand that you want to visit and look for any recommended health precautions for those areas.
Find out your medical history and previous immunizations.
Go to your physician four to six weeks before your departure date.
Tell your doctor your proposed itinerary, duration of stay and purpose for traveling.
Receive the following vaccinations if your doctor concurs: cholera, hepatitis A, hepatitis B, Japanese encephalitis, polio, rabies and typhoid.