The coronavirus was first detected at the Huanan Seafood Wholesale Market in Wuhan, China HECTOR RETAMAL/AFP via Getty Images
When the first signs of an unknown virus began showing up in Wuhan, China, in December 2019, scientists raced to understand what was happening. In the five years since, they haven’t stopped running, with over 1 million papers published about SARS-CoV-2 and covid-19. Yet despite this outpouring, some big scientific questions about the virus remain.
Is the virus lurking within wildlife?
Early in the pandemic, it became clear that the coronavirus could jump from humans into other animals and back…
