As vaccination rates rise in many parts of the world and even countries that previously had strict COVID-containment strategies gingerly ease restrictions, China is doubling down on its zero-tolerance policy.
China pioneered that approach — of strict lockdowns, multiple rounds of mass testing and centralized quarantine — during the world’s first major outbreak of the coronavirus in Wuhan. And it continues now, even as it says it has fully vaccinated 77% of its 1.4 billion people and started giving booster shots.