It is not required unless traveling from an epidemic area to Thailand.

Visitors to Thailand who have visited any of the following countries must have a valid Yellow Fever Vaccination Certificate.  Those who do not present a valid Yellow Fever Vaccination Certificate may be vaccinated and quarantined for up to six days.

 Africa 

 Central and South America 

Useful Information:

• Bringing Medication into Thailand
• Information from the U.S. Centers for Disease Control (CDC)- Specific information on Thailand.
• List of Insurance Providers in Thailand