According to the current research, the nucleic acid sequence of the new coronavirus is similar to that of the coronavirus genes in bats, and the homology of the gene sequence of the new coronavirus with SASR and Middle East respiratory syndrome, two coronaviruses, has reached 85%. After adaptation in humans, it then causes human-to-human transmission, but the true source of the virus is not yet fully understood and further research is needed. It is currently considered that the virus may have originated in bats at the earliest and was transmitted to humans through the transition of intermediate hosts such as pangolins. After adaptation in humans, it then causes human-to-human transmission, but the true source of the virus is not completely clear at this time and further research is needed. Content source: Dr. Arigato