What are the current vaccination requirements for children aged 12-16 traveling to Thailand under the Thai pass system?

The current situation for children aged 12-16 regarding entry into Thailand involves discussions about potentially easing the vaccination requirements. As of now, those from the U.K. have predominantly received only one jab, which complicates their eligibility under the Thai pass system that currently does not permit them to obtain a pass. Recent updates from the Tourism Authority of Thailand indicate changes expected to take effect soon.