CLEAN : WHO mission leaves Wuhan, ending virus probe in China

The video discusses a review of individuals from October to December, finding no potential cases. It explores the persistence of the virus in low temperatures, particularly in frozen food trade conditions. The hypothesis suggests that frozen wild animals, contaminated elsewhere, could have introduced the virus to the market. This angle is considered worth further exploration.

What conclusion can be drawn about the potential cases evaluated?

What is the significance of the frozen food trade in relation to the virus?