where sars—cov—2 may have spilled over from animals. there is also the fact this has happened a number of times before, most notably with the stars outbreak in china in 2003, and middle east respiratory syndrome whichjumped into camels and then humans in saudi arabia. we have seen similar events spill over events, but there also molecular evidence from information studies that at least three of the four seasonal coronaviruses, if not all of them, really originated from the animal world. so there is really a track record of coronaviruses doing this, so that is why i think it is really still the most likely explanation. my name is dominic dwyer. i am a medical virologist and