Johan von Schreeb himself has worked with similar assignments before.
He believes that it will take a long time to get an answer - and that the biggest challenge will be cooperation with Chinese authorities.
- The political challenge will be the biggest, with transparency and access to all data, says Johan Von Schreeb.
What the expert group is looking for is to track where the coronavirus comes from.
- They have gone to caves and picked bats with nets to take samples and see if the virus is there, says Von Schreeb.
Hear Johan Von Schreeb talk about how the assignment will go step by step in the video above.