Image copyright Barcroft Media The Chinese city of Qingdao is testing its entire population of nine million people for Covid-19 over a period of five days.
The mass testing comes after a dozen cases were found linked back to a hospital treating coronavirus patients arriving from overseas.
In May, China tested the entire city of Wuhan - home to 11 million people and the epicentre of the global pandemic.
The country has largely brought the virus under