THE World Health Organization’s scientific mission to explore the origins of the coronavirus has only been under way for a few days, but has already been the subject of clashes between the US and China over the investigation’s access to people and evidence.

The first of the 13 scientists arrived in Wuhan on 14 January, after visa issues delayed an original 5 January start date.

Led by Peter Ben Embarek at the WHO, the team is currently in quarantine for 14 days in a …