China's Qingdao Covid cluster traced back to two dock workers, officials say

A coronavirus outbreak in the Chinese city of Qingdao, which prompted mass testing of millions of residents, has been traced back to two dock workers, authorities said on Friday.

China's Qingdao Covid cluster traced back to two dock workers, officials say
A coronavirus outbreak in the Chinese city of Qingdao, which prompted mass testing of millions of residents, has been traced back to two dock workers, authorities said on Friday.