![A woman walks past a closed market in Wuhan, the central Chinese city where Covid-19 was first identified. Getty](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/NHLIL6ZBE3GRNXWVDK3QSE4FMU.jpg?smart=true&auth=798e8c81b0c10301727b84ecb602d21a6adeee8ddd63e69900b90b9d94ae5e75&width=400&height=225)
A woman walks past a closed market in Wuhan, the central Chinese city where Covid-19 was first identified. Getty
A woman walks past a closed market in Wuhan, the central Chinese city where Covid-19 was first identified. GettyCovid origin probed as China tests thousands of Wuhan blood samples
200,000 samples highlighted by World Health Organisation as clue to when virus first crossed into humans
The National
October 13, 2021