Winter Olympics: Covid control with Chinese characteristics. What Beijing has learned from Tokyo ahead of second pandemic Games

Daily tests, health app tracking and sequestered living facilities await thousands of athletes, coaches, officials and more when they arrive in Beijing for the 2022 Winter Olympics.

The entire event, which starts next week, will take place within a Covid-19 bubble – or “closed loop” as it’s called in China – that encompasses living quarters, competition venues and other official facilities, where everyone inside is isolated from the public.