(Photo: AFP)The requirement that all international travellers show proof of full Covid-19 vaccination before boarding flights to Thailand will take effect from Sunday, the Civil Aviation Authority of Thailand (CAAT) said on Saturday. The aviation regulator has formally notified all parties about the change to arrival rules for international travellers aged 18 and over. The vaccination requirement was scrapped last October but it has been revived as travel from China is about to resume worldwide on a large scale. Public Health Minister Anutin Charnvirakul has said that any rules adopted in Thailand must not discriminate against any particular country. Thai passport holders or travellers in transit are not required to submit proof of vaccination or hold a Covid-19 insurance policy.