Throughout the pandemic, China has adhered to a strict zero-Covid policy that aims to stamp out all outbreaks and chains of transmission using a combination of border controls, mass testing, quarantine procedures and lockdowns.
Authorities fell back on these familiar tactics as cases began surging around the country last week, imposing targeted lockdowns for residents in high-risk areas and mandatory quarantine for close contacts.
In Shanghai, where infections are rising, the city government converted several apartments into centralized quarantine centers, forcing tenants to clear out all their belongings, according to several government notices seen by CNN.