SARS-CoV-2 shows a much earlier divergence in the world than in the Chinese mainland

Summary: The study found that SARS-CoV-2 may have emerged in Hubei province, China between mid-October and mid-November 2019. The dynamics of the virus before discovery showed that over two-thirds of SARS-CoV-2-like zoonotic events would self-limit, without causing a pandemic. The study highlights shortcomings in current zoonosis surveillance methods.