Health Ministry clarifies quarantine reduction conditions Health Ministry clarifies quarantine reduction conditions PHUKET: The Ministry of Public Health (MoPH) yesterday (Mar 31) clarified conditions behind shortening the length of mandatory quarantine for overseas visitors while confirming which vaccine providers would be deemed acceptable for those entering the Kingdom. Quarantine conditions have been reduced as of today for overseas visitors. Poto: AFP. Copy of the order. Photo: MoPH. « » The document, issued by the Ministry Deputy Chief Yongyot Thammawoot, stated the following: Quarantine will be reduced to seven days for tourists who have received both doses of a COVID-19 vaccine at least 14 days previous to their arrival. They must possess a certificate of vaccination issued by officials where they received the vaccine.