From April 1st, travelers are not required to present negative Covid-19 test certificates upon entry.
Thailand removes Covid-19 testing requirement for entry
This policy applies to both vaccinated and unvaccinated travelers, as announced in the Royal Gazette on March 31st. However, travelers still need to undergo testing after entering Thailand Thailand.



According to Monster
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Reference: Travel Guide from Mytour
MytourApril 5th, 2022