Where did the SARS-CoV-2 virus come from? As a team of researchers from the WHO prepares to report on its investigation into the origins of the virus, we discuss the leading theories, including the controversial ‘lab leak' hypothesis.
Although there is no evidence to support it, the lab-leak idea remains popular among certain groups. Similar hypotheses were even touted about the Ebola outbreak in Sierra Leone. We discuss why theories like this seem to gain traction.
