A member of the World Health Organisation expert team investigating the origins of the coronavirus in Wuhan said the Chinese side granted full access to all sites and personnel they requested a level of openness that even he hadn't expected.

Peter Daszak told The Associated Press that team members had submitted a deeply considered list of places and people to include in their investigation and that no objections were raised.

We were asked where we wanted to go. We gave our hosts a list [...] and you can see from where weve been, we've been to all the key places,” Daszak said.

"Every place we asked to see, everyone we wanted to meet [...] So really good,” said the British-born zoologist.