- Study suggests the Wuhan coronavirus had a relatively recent jump to humans (9 chinese cases studied had 99.98% same genetic sequence - so not much divergence), and the likely source is a bat (coronavirus variants there shares 88% of genetic sequence) compared to 79% with SARS and 50% with MERS https://www.thelancet.com/pb-assets/lancet/pdfs/s0140673620302518.pdf 6 comments science