BERLIN (Reuters) -Tickets for the Beijing 2022 winter Olympics will be sold to spectators from mainland China only, while athletes and other participants not fully vaccinated must spend 21 days in quarantine ahead of the Games, the International Olympic Committee said on Wednesday.

The Beijing Games organizers have provided information to the IOC Executive Board 2022 about the principles that will ensure “safe and successful Olympic Paralympic Winter Games” as planned, the committee stated. February 4th will see the Beijing Games.

One of the IOC’s principles was that everyone who has been fully immunized would be admitted to a “closed loop management system”, which will allow them to move about freely.

The system will include all Games-related venues and areas, including accommodation, catering, and the closing and opening Ceremonies. It will also serve as a transport system.

According to the IOC, all international and domestic Games participants will be tested every day.

Participants arriving to the Chinese capital without being fully vaccinated are required to spend 21 days in quarantine. Games itself last 16 days.

The IOC stated in a statement that athletes who are able to provide medical exemptions will be considered.