Singapore, one of the world's most vaccinated countries, is likely to stick to its mask mandate for some more time, according to its foreign minister, as the city-state cautiously reopens its borders and eases its Covid-19 restrictions.

"I don't think people want to wear masks. But on the other hand, I think we've gotten used to it," Vivian Balakrishnan, who was a medical doctor before taking up politics, told Reuters.

"That should be the last measure we dismantle," he said in an interview.