Thailand's health authorities scrambled to contain the outbreak of measles in southern provinces, with 14 deaths and more than 1,500 injuries since September.
Officials blame the outbreak on low vaccination rates in the south due to misconceptions among Muslim populations about the nature of the vaccine.
Islam forbids eating pork and sometimes vaccine manufacturers use gelatin extracted from pork products as stabilizers.
But health official Pahran Bawan confirmed that Thailand imports vaccines against measles does not contain gelatin extracted from pigs.
Recent cases in the Muslim-majority southern provinces account for half of all cases in the country since the beginning of this year.