Interior Ministry permanent secretary Chatchai Promlert also suggested closing all areas where temporary access is permitted for the trade in goods.
Where crossings are essential, they should be limited to just one, he said.
Foreigners arriving via that single entry-point who have been to a high-risk locale will be quarantined at a designated facility and must cover their own costs.
Thais arriving under the same conditions will be asked to self-isolate for 14 days in their hometown.
Source : https://www.nationthailand.com/news/30384521