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.News: ‘Major stones unturned’: COVID origin search must continue after WHO report, say scientistsNews: Where did COVID come from? Five mysteries that remainNews: Can COVID spread from frozen wildlife? Scientists probe pandemic origins
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