4 January 2022. Xian is stepping up efforts to achieve “zero cases in communities”, a situation where all new infections are found among people already in quarantine. That will create good conditions for the city’s next downgrade in virus curbs.https://www.devdiscourse.com/article/health/1870207-chinas-xian-vows-strict-implementation-of-covid-curbs-even-as-cases-decline