Covid-19: “The passage of the virus in humans is a mystery which will probably never be elucidated”

Just five years ago, China announced the first death officially attributed to Covid-19. However, for several weeks already, alarming information had been circulating in Wuhan hospitals. At that point, the virus had not yet been identified — it was days later, marking the start of a global pandemic. Interview with Yves Buisson, epidemiologist and member of the National Academy of Medicine.