On March 18, Xi'an reported a locally transmitted confirmed COVID-19 case involving a medical worker.

Surnamed Liu, the worker, 36, handled nucleic acid sampling and laboratory testing for coronavirus sufferers at Xi'an Eighth Hospital, designated for dealing with COVID-19 cases.

She was later confirmed by local health authorities as a coronavirus vaccine recipient who had finished two doses of the vaccine in a previous inoculation round for groups at higher risk.

At the Monday teleconference, Li Mingyuan urged strengthened publicity and guidance on the current mass vaccination by actively promoting vaccine-related knowledge through online and offline outlets to help eliminate public doubts.

Tian Yan contributed to the story