Tickets for the Beijing 2022 Winter Olympics will be sold to spectators from mainland China only, while unvaccinated athletes must spend 21 days in quarantine ahead of the Games, the International Olympic Committee said on Wednesday.

Organizers of the Beijing Games have informed the IOC's Executive Board 2022 of the principles to deliver "safe and successful Olympic and Paralympic Winter Games as scheduled," the committee said.

The Beijing Games start on Feb. 4 and the Chinese capital will become the first to have hosted both summer and winter editions after also staging the Beijing 2008 Summer Games.